Proceedings of the Iowa Academy of Science
Volume 17 Annual Issue Article 10
1910
Preliminary List of the Parasitic Fungi of Fayette County, Iowa
Guy West Wilson
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Recommended Citation Wilson, Guy West (1910) "Preliminary List of the Parasitic Fungi of Fayette County, Iowa," Proceedings of the Iowa Academy of Science, 17(1), 47-79. Available at: https://scholarworks.uni.edu/pias/vol17/iss1/10
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OP 'I' HE PAHASl'rIC FUNGI OF' FAYE TTE PHELL\112\.Aiff LIS'r COUNTY, IOW A.
BY GUY WES'.r WILSON.
That northeastern Iom1 is a rich fie'ld for the mycologist i s well known to those in any degree acquainted with the work of Prof. Holway while a resident of Decorah. From this region came nnmerons new species
and here "·as gathered much information concerning others a l ready known. ·while from its neamcss to Decorah the region about Fayette
cannot offer such facilities for pioneer work as did Decorah, yet it is a ... most excellent base from which study the mycological flora of this to Lying as it docs on tlw borderland between the Tran section of Iowa. sitional and Upper Anstral zoues alild m idway between the plains of th·� west ai1d the fore8ts of the east this section of the Htate is a strategic point, so speak. It waR, with no small pleasure that I to therl'fore. looked for ward to my field work in this region. 'I' he resnlts have fa1· excelled e xpectations. rn�· The reg-ion is rolling prnirie. here there by a trH vei·sed and streams . ehief of "·hich are the Turkey and ·wapsipinnicon rivers with their th<· tribntarics. About four-fifths of t ):ic county is drained by the former, "·hich crosses it in the northern part. 'f he central portion of the county
is drained hy the Vol ga river, a tribntary of the Turkey. 'I' he southern border and southwestern corner of the county are dra ined by the \\Tap stpmnicon. These streams are skirted by mor or less pronounced belts e of timber. 'f here is, consequently, a great diversity of the soil and shade factors which influence the development of the tiol'a of the region, the
lower as well as the higher pl ants.
The gerater part of the field work wa8 confined to the region about Fayette. a short trip was to Dover township, and hnt llHHl<' a few spef'ies "· ere collected near Oel wei11. 'l'h e time employed wa8 the a ntunm of l!lOI, spl'ing of !)Oi'\. and tlw sPa8on of the a11d a11tmn11 1 190!1. 'rhe pres ent contains all the spef'il·s haw b<'t'n dPtermiued I ist which up to the prPsent tirnl', bnt eonsiderahle bulk un i d entified material has al8o a of 'l'he munb<�r sp<'eil's IH•1·e recorded i8 hnrnlrPd a nd aceunmlated. of two forty-fi.w-hnt hr<>nty-tl11'l'<' tlw of D1'. 'l'relrase ]pss than total list of
Published by UNI ScholarWorks, 1910 1 Proceedings of the Iowa Academy of Science, Vol. 17 [1910], No. 1, Art. 10
SCTE:\"CE 4S lOWA ACADE'.\IY OF' Dr. \Yiseonsin spc('ies. nrnl \rithin ,;i xte('ll of tlw 111rn1lH'r r1•1•ord<'d lly f r rlHlenYOOd o Jmliami.'::' 'l'hc only previous pub] i c ations p rasi fungi of :B'ayette lkvoicd to thl' a te county are two papci·s by Dr. Bruec Fink:' in he cmuncrntcs the 1d1ich Erysiphaccac colleded h.'- him: �\cconling to rrangement followed the a by Salmon and adopted b)- �\nd rsowr ihe total m1mher of forms was e fift ,\·-four h s s. larger f 1wre re t\\ <'ni;1·-m1e infreting o t The part o these and aclditioll,; (' OlllJlH>ll to hoth my colleeted made to the list. Tlt e lwsts own and Dr. Fink's collections have been mnrked with a tnr ) while s those species 1Yhich were not recollected nre included without a serial number und the additional hosts given in notes under the various the species.
\V hile consistency has not been attempted in the matter of nomencla ture the species are named in accordance ·with the Inter available litera ture of the various groups. The Erysiphaccac follow Anderson's paper the use Salmon's classification, a th ugh some of his conclusions do in of l o .. not appeal to me satisfactory disposition of certain forms. The order as oniliales is treated in accordance with Pound and Clement 's "'R,ear JI rangcmcnt of the North American Hyphomycetes. ''�' This eliminates Dcnwiiaceae from consideration, placing all the forms usually considered
lic 011 gi n g i11 Jloniliacaw. Tlte families n as l to this family differ o ly in color, character which has been shown to be a matter of nutrition a more than an inherent character of taxinomic importance. This arrange ment brings the el ed Ham u laria, and Ccr closely r at gern·1·a Didymi11ium, cospora in close proximity nnd eliminates Cercosporella for the light colme(l peci es of Ccrcosporn. 'l' he Ui:ulinialcs follow the classifieatiou of s Dr. Arthur 's monographt in so far as it is ayailable. This causes a divisi n of certain genera of the Mclanip:;oraceae and the removal from o P.nccin ia and Uromyccs of certain species which show closer relation a ship ·with Ravenclia. nomenclatnre of hosts is that of the seventh 'l'he (•clition Uniy 's .Jla11ual, ri h in tlw n ta ees of f.inch of 1 t l'.itatio11s seYe1·ul i s n in smne :\Iairnal. Uudet' pecies an� giv mimes ns arc not the Britton 's each s en es ft·eq1wn<'.\', ancl might he of snd1 not on app<'anmre, alnrnlla11re ns interest to mycologists, or of as sistarn'.e to he \vho is interested t student *'frelease, Trans. Wis. Acad. 6: ( l-40). 1884. (268 species.) Underwood Proc. Indiana Acad . Sci. 1893 : :30-61. 1894. ( 261 species of parasitic Fungi.) *Blights, Orchids, and Ferns of Fayette, Iowa. Bull. Upper Iowa Univ., Jan. 1894. Additions to Iowa Flora Proc. Iowa Acad. Sci. 14: 103, 104. 1893. i· Proc. Iowa Acacl. Sci. 14:15-46. 1907. *Minn. Bot. Studies 1: 644-673, 726-738. 1896-97. tNorth American Flora. 7: 83-169. 1907. https://scholarworks.uni.edu/pias/vol17/iss1/10 2 Wilson: Preliminary List of the Parasitic Fungi of Fayette County, Iowa
IOWA ACADEMY OF SCIENCE
in these forms. At the conclusion of the list is a host index, which includes cross references to the synonomy of the hosts. Such synonyms have been cited for the species as the name e ployed might m make neces sary , and where the name employed by Greene in his " l nts of Iowa" P a is not the same.
In c nclusion I wish to express my he rty appreciation of the kindness o a of Arthur in ver fying my determination of Dr. J. C. i the Uredinales, and suggestions in this group. for
CLASS PHYCOMCETES.
ORDER CHYTRIDIALES.
Fam ily Synchytriaceae.
E D O DE 1. .\ C (Peck) Wilson & Seaver. [Ureao aecidioides SYxcnYTRIU.111 I I I S Peck; S. fulgens decipiens Farlow.] On :l mphicarpa monoica (L.) Ell. and A . Pi tc h r T. & G. (Falcata e i K ntz ..1 u e Our c o monest species of the genus. The yellow sori which are borne in m great p rofusion on leaves, stems, and immature fruits of tliehost renders the infected plants quite conspicuous. Very abundant upon the first host, but sparingly on the second. 2 . ANEMONES (de Bary & Woronin) Woronin. SYXCIIYTRIUM On n em on e quinquefolia L. A. The purple sori of this species are quite abundant on stems and leaves, espec ially along the veins. This host is infested with several ung or f i two three ot' 'Y hich frequently are associated, in the present instance the commonest one Croeystis anemones. The epidermal covering of the smut serus is fre bt'ing conred with an abundance of the galls of the Sync71ytrinm. quently FL:LGEXS. S chrreter. ;) . SYXCIIYTHIC\I On Ocnothera biennis (Onagra Scop.) L. A sin gle rosette was found infected with this fungus late in May.
O Y H LWA ! Farlow. 4. SYXCHYTRIU.111 o narda fistulosa L. On Jl A con sp icuous species owing to the stunting and slight hypertrophy of the os the bright u rpl e color of the galls. First noted about the middle of h t and p July.
ORDER ENTOMOPHTHORALES.
Entomophthoraceac. Family 5. ExTO::IIOPHTHORA MuscAE. (Pers.) Fries. On Jlusca domestica L. a c use of a considerable m ortality among house flies in the late autumn. The 4
Published by UNI ScholarWorks, 1910 3 Proceedings of the Iowa Academy of Science, Vol. 17 [1910], No. 1, Art. 10
IOWA ACADEl\lY OF SCIEXCE
ORDER PEROXOSPORc\LES.
Family Albuginaceae.
6. ALBUGO BL T (Biv. ) Kuntze. [Cystopus Bliti (Biv.) de Bary.] T I On Ainarau thus grnecizans L. and A. retroflexus L.
ALB C'GO " CAXIJJD.\ (Pers.) Roussel.
On Brassii'a L. J Koch, m up etal u1n ·wmd., and Raclicula nigru ( J,cvidiu palustris (L.) Moench. (Roripa Bess.) The commonest of our white rusts.
8. ArnuGO PORTULACAE (DC.) Kuntze.
On Portulacri olcrricea L. Common thrnughout the growing season.
A Buc:o TR.\GOPOGO:\IS (DC.) S. F. Gray [Cystopus c117Jicus Lev.] 9. L On A m ros ia rirtemisiaefoli Peronosporaccac. Family Sor.EHOSPOH.\ rnn .111x1coL.\ (San·. ) Sehrmter. I Peronospora graminicola 1 O. Schrmter. ] On S etaria glaum (L.) Beauv. and S. (L.) Beauv. [Chaetochloa sps. virirlis Scribn.] Not abundant, the oospores being found sparingly in the autumn. 11. RHYSOTIIEC\ (Speg.) vV. vVilson [Pcronospora mtstral s .\UlTH.\LTS G . i Speg.] On lo a ta ( i\Jichx. ) T. & G. ( l\Ticrampelis Greene.) Ec llinocys tis 7J A single infected vine ·was found in Dover Township late in August. RHYSOTJH:('.\ (Peek ) ·wilson Gemnii Peck.] 1" GEH.\XH G , \V. [Pcronosporri On Gcrcmi111n 111. aculatum L. About half a dozen infected leaves found in early summer. Rnn.;o 1·111·:C.\ (Farlow) G. vV. vVilson [Peronospora Halstedi i 13. lL\LSTElllI Farlow, Plasmopam lla lstcclii Berl. & De-Toni.] On Ambrosia art'.•m isiuefolia L., A. trifirla L., comosa (A. Gray) Birlcns vV iegand, B. fronrlosa L., upatorimn p11pureum L., H elianthus rloronicoicles E Lam., and Lcpacl1 ys vinnata ( Vent. ) T. & G. (Ratbida Barnhart. ) A common and variable species with a very wide range of hosts. RI! YiiO'I'IU-:(',\ ABIH-<'I·:Xs S('.hrmte r ) G. vV. vVilson. I Pcsonosvora obcluccns 14. ( Sehrmter. [ On I1npatie11s l! if lora \V alt. Found sparingly once in midsummer. Rnn;orm·:cA (B. & C.) G. W. \V ilson. [ Peronospo m viticola 15. YITH'OL\ d e Bary, P lasmovarct viticolct Berl. & De-Toni.] https://scholarworks.uni.edu/pias/vol17/iss1/10 4 Wilson: Preliminary List of the Parasitic Fungi of Fayette County, Iowa rowA ACADEMY SCIENCE 51 OF' On Vituse v i lpina L. i Probably the most abundant species of the genus, growing especially lux uriantly on the common wild grape, all the green parts of which are affected. l'pright shoots, m uch enlarge and bearing smaller fleshy leaves, both leaf and shoot densely covered with the fungus are not uncommon on trailing v.i nes. PL\S�! Ol'.\R.\ ( llnger) Schrceter. I Peronospora pygnwea Unger.] 16. J>YCL\l.\K\ On A 11c111011c· canadcnsis A.. "arolinia11a ·wait., A. qninquefolia L .. aml L., Hcpatirn aeutiloba DC. (H. acnta Britt.) Very abundant from early spring to midsummer, often associated 1Yith other fungi on Anemone quinquefo lia. PE O X O S PORA Fuck el. 17. B ALT.\ On Plantago major L. �at abundant, appearing in midsummer. PEHOXO>il'OIL\ AHTIIHI Farlow. 18. On (Onagra Scop. ) Onwt71 em biennis L. First seen July 16, 1909, and abundant from then until frost. Practically every leaf of many fully developed plants were severely infected throughout the region about Fayette, but no infected rosetts were seen. PEBO X O POR. C.\LOTIIEC.\ de Bary. 19. R \ On Galimn boreale L. So far as observed this species was confined to a few clumps of the host which grew in the open along the railroad, but in these localities the species was quite abundant in the early summer. 20. PEROXOSPOR.\ CIIENOPODII Schlecht. On Cheno.podiurn albiim L., and hybridum L. 0. Xot uncommon throughout the later summer. The present species has been confused with P. effusa from which it is quite distinct. The relationship of these species has been discussed elsewhere so that it is unnecessary to enter into details here. PEROxosporu Ecnrxo:,;pnL\JI Swingle. 21. On Lappula virginiana (L.) Greene. 'While searching· in early October for the perithecia of a powdery mildew two leaves were found infected with the present species. The collection is of more than ordinary interest as this is the most eastern station for the species, not to mention the fart that it has heretofore been collected only on narro\Y leaved hosts of the type of L. Redou:skiana. 22. PEROX08POR.\ (Grev. ) Rabenh. EFFUS.\ On Chenopoflium albmn L. Abundant throughout the summer and autumn months. PH BIA 23. PEBOXOSPOR.\ E c OR E Fuckel. Euphorbia maculata L. On Published by UNI ScholarWorks, 1910 5 Proceedings of the Iowa Academy of Science, Vol. 17 [1910], No. 1, Art. 10 IOWA ACADI•Jl\IY OF SCIENC� 52 Common throughout the summer, causi g a more erect habit in the host, but n n ot having such a pronounced effect as the aecia of Uroinyccs Enphorbiae. 24. PERONOSPORA HYDROPHYLLI ·waite. On Hydro'(Jhyllmn virginicum L. A single collection was made June 11, 1908, he infection covering only a few t leaves and not being abundant on these. 2G. PEno:--;osPon.\ PARASITICA (Pers.) de Bary. On Dentarict laciniata Muhl . . DralJa caroliniana ·wait., E·rysiin uin parviflora Xutt., and Lepillium apetalnrn Willd. Common and rather abundant, ri robably infesting a still greater number of hosts as it is to be lookell for on almost every snecies of crudfer. 2,6 . PEHINOSl'ORA POTENTILLAE de Bary On Agrimonia mollis & G. ) B ritton, Gcum canarlcnsc Jacq. and Potcntilla (T. monsepalensis L. Rather rare through the entire season. 21. P1moKOSPOR.\. soRDIDA Berk. Br. & On Scrovhularia marylanllica L. Not common, bnt where found rather abundant. Spring and early summer. 28. PEROXOSPORA TRIFOLIORUJ\-I de Bary. On Astragulus canaclcnsis (A. carolinianus L. ) L. Rather abundant in earl summer. y 2�. Pi-:no:--; osPOR.\ (Berle ) de Bary. V1cL\E On amcricana ricict L. Rather frequent during the early summer. 30. Regel. [Pcrnnospora ganglifonnis de Bary. ] BRJrnn LAcTcc,\1·: On Lactucct canadensis L. Neither common nor abundant. l\lidsummer. CLASS ASCOMYCETES. ORDEil EXOASCALES. Family Exoascaccue. PnUNl 31. E o.\ c Fuckel. x s us On us arnericana Marsh. Pnm Not uncommon on wild plums causing the distorted fruits !mown as plum pockets. .• ( Ol• Blil.l:Sc1·:ss c;vront. & Desrn. ) Sch rooter. ::2. T.\l'llH L\ On Q11crc11s ru bra L., and Q. palustris :Nioe nch. Abundant in spring and early summer, causing el o ish or somewhat w ater y l w soaked blisters on the leaves of the oak. https://scholarworks.uni.edu/pias/vol17/iss1/10 6 Wilson: Preliminary List of the Parasitic Fungi of Fayette County, Iowa IO\\'A ACADE:\lY OF SCIEXCE APHR JoHANSONII Sadeb. 33. T IA On Populus trernuloides Michx. Common on the immature aments of the aspen, causing a thickening of the capsule which is a very conspicuous object owing to the bright yellow color of the diseased tissue. T.\l'JJ HL\ YH:c t.\IC.\ Salleb. & Seym. :14. On Ostrya 1.·irginiana (l'\Iill.) K. Koch. Causing a very conspicuous hypertrophy of the leaves of the host. Early summer. ORDEH l'UU SPOIU.\LES. Fam ily Erys ip haceae. 36. SrII.\EHOTI!EC\ (DC. ) Burrill. HL�lLLI urJ11J osczwllt \Vllr. hirsuta B'ielrnell), and Hhus qlabra L. On Ll fJrimo11 iu (A. Xot a common s11edes, and not abundant on the hosts upon which it was collected. Reported by Fink on E11'i lo biuin ol ra u in l\luhl. c o t Sl'lI.\EHOTII L<'.\ JTLla .\L\ (Schlecht. ) Salmon. :: t). H1·�uc1.1 On Erccthites hieracifolia (L.) Raf., '''Erigeron anaden s is L. (Leptilion c canadense Britton), ofjicinalc \\'eber ('1'. Taraxicum Karst. ), and 1'araa:icu1n T'eronica ·v·irginica L. (Leptandra Nutt.) Not uncommon on various ;reeds. Also reported Fink on Bidens frondosa by and Soncllus o l r c c us L. L., c a SP1u1-:1:0T 111-:c.\ C\Yallr.) Lev. r.\X.\OS.\ Reported by Fink on Rosa blanda Ait. S P JL\I:J:OTIIEC.\ �rons·LTY.rn (Schw. ) B. & C. He;:ortell on Hi/Jes anll rotnnllifolinin :\Iichx. Conidia Ly Fink C'ynosliati L. /�. en 11in L'Her On mncrir·ana l\larsh., and P. avimn L. l'n1 1ws Xot uncommon on species of plum and cherry. Reported by Fink on an unidentified species of Prunits. Po DOSI' 1r.u:n.\ L!WCOTRICH A ( E. & E.) Salmon. :JS. On Pyrus Ma lus L. (l\Ialus l\l olus Britton.) Collected once on seedlings. 39. DC. En.YiifI'Il!·: POLOGOXI On Po lyuo11u1n avicularc L ., P. L., and Ranunculus o r i us ercctuin ab t v L. Abundant on various herbacious plants. Reported by Fink on Astragalus canadensis (A. caroliniana L. ), and Oenothcra. biennis L. (Onagra Scop.) L. 40. DC. ERYSIPHE CICIIORACEARUJ\[ A. On * rn brosi em isi aefo li trifida L., Aster cordifo liits L., A a art a L., *A.. puniceus salicifolius Ait., Cirsiwn iscolor L., A. d (Muhl.) Spreng (Carduus 11 1/iaC'fo lium Reichard ag ra oi des f.), Helianthus Nutt. J Eu11atori111n (E. c t L. Published by UNI ScholarWorks, 1910 7 Proceedings of the Iowa Academy of Science, Vol. 17 [1910], No. 1, Art. 10 54 IOWA ACADK\IY 01<' SCIE:\CE rloronicoicles Lam .. Hcliopsis swbra Dnnal. Parictaria pennsylranica l\luhl.. l\I ichx., Plantaqo major L . . P. Rugelii De en., bracteosa V. hastata L., * l'rrb1·1rn * V. strictci Vent., itrticaefo lia L. *1'. Our commonest species of the family, infecting a wide range of herbaceous hosts and consequently showing considerable variability. Reported by Fink on Anibrosia psilostachya DC., Aster lacvis L ., Aster sagitufolins vV illd., Aster sp. indet., Hclianthus annuus L., Phlox Druinmonclii Hook . . Soliclago cana clensis L., S. rigicla L., and S. serotina gi_qantect (Ait.) A Gray . . EuYSIPHE G-�Lr:oPsrnrs DC. 41. Conidia on JYJcntha canadensis L., and Stadi ys palustris L . are referred here. Reported by Fink on Scutellaria lateriflora L. -12. ERYSIPHE GIL\MlNIS DC. On Poa pratensis L. Not uncommon. especially the conidia. Reported by Fink on Cinna an tn dinacea• L. 43. l\TrcnosPHAEHA ALNI (Wallr.) Winter. On Cornus azternifolia L. f., *Corylus americana L., * Lonicera Sullivantii A. Gray, L. tartarica L., Ostrya virginica (Mill.) Willd., Quercns ·velutina Lam., *Syringa mtlgaris L., and Viburnum lentago L. Common and usually abundant on a number of woody plants and quite variable, both in habit and character. Even upon the same host the myceliom may remain very conspicuous after the perithecia are mature or it may dis appear completely. Reported by Fink on the following additional hosts : Car pi nus caroli11iana vV alt., Eonyrnous atropnrpnreus .Tacq., anrl Ulmus americana L. 44. l\I1cROSP1Lu:1u ALxr EXTEXS.\ (Cooke & Peck) Salmon. On *Quercus alba L., and Q. velutina Lam. Common on sprouts but not seen on full grown trees. Reported by Fink on Q. rnbra L. MICROSPHAEHA GHOSS1ILARIAE (Wallr.) Lev. Reported by Fink on Sanbucus canacl.e nsis. MICROSPHAEHA DIFFUSA. Cooke & Peck. 45. On Desmoclimn sessilifo1ium (Torr.) T. & G. (Meibomia sessilifolia Kuntze). A single collection in Dover Township. 46. :'.VIICHOSI'IIAEHA RD SELLII Clinton. S On *Oxalis stricta L. Not uncommon. l\IICROSPIL\ERA EFIIOHBL\E (Peck ) Cooke & Peck. Reported by Fink on Euphorbia corollatci L. 47. UNCIXULA S"\LlCIS (DC.) Winter. On Salix humilis Marsh. Very abundant. Also reported by Fink on an unidentified species of Salix. https://scholarworks.uni.edu/pias/vol17/iss1/10 8 Wilson: Preliminary List of the Parasitic Fungi of Fayette County, Iowa IOWA OF SCH�:'\CE ACADJ�i\lY ::\EL\TOR (Schwein.) Burrill. 48. u.'\Cl.'\CLA On Pseclcra quinqucfo lia (L.) Greene (Parthenocissus Planch.), and Vitis i· ulpina L. Rather common. Reported !Jy Fink on Vi tis r•orrl ifo la l\li chx. and an un identified species of Vi tis. U.'\CL\TL.\ crnc1NAT.\ Cooke & Peele Re11orted by Fink on Acer saccll arurn Marsh. 49. u.'\CI.'\liL.\ :IL\Cl!OSPORA Peele On * Ul m us arn ericana L. Collected. !Jut once and then not over abunuant. U.'\CI.'\CL,1. CLDiTO.'\I Peele Reported. !Jy Fi nk on Tilia amcricana L . 50. PHYLL.\CTJ .'\1.\ COHYLEA ( Per s. ) Karst. On Fraxinus arn cricana L., and *Gornus stalonifera l\1ichx. ( l eg. Hunger 01n cricanuin l\l ill (leg. HnngerfonL) fonl. �Y.a11t71 0.ryl11111 \Vhilc the collections of thi s species were rathe r scanty it appears to be rather a common species judging !Jy !<� ink's long list of additional hosts which follo w: sar:charnm Marsh., Bctula pa>JJyrifera Marsh., Gornus florida L., 4.cer Cory u s am cricana L ., Cra tacuus sp. indet., Fraxinus sp. indet., Desrnodiurn l urandifloJ'C (Walt. ) DC. ( Mcibom ia grandifiora Kuntze), and Ul1nus americana L . • Fam ily Perisporiaccac. Gl. DnIEIWSPomi: :ll Cor,1,1:-;s1r' ( Schw . ) Thmuen. On canallcnsis (L.) Medir. A.1nclaw·hicr The entire under surface of the leaves is covered with the black 11er ithecia. The fungus appears to !Je quite i njurious to its host as it causes a pronounced falling of the leaves in l ate summer and early autumn. That the myc elium is perenial is indicated by the changed appearance of the infected twigs which grow quite luxuriantly, arc thicker and brighter colored than the healthy twigs, besides showi ng a decided tendency in favor of forming witches brooms. Duu:misPon u;.:-1 PL:Lcnnl::\I Sacc. On Conws paniculata L'Her. Common in late summer. Yl'O('Jn:Au:i-i. OIWl·:H ll Hypucreaccac . • Fam ily iJ3. HYPO" L.\ CTrFLl'()Hl',\I ( Schwein. ) Tu!. Y('l·:S On some spec i es of A17a rirnccae. probably Loctaria. One colleetion of some half dozen infected plants was made in late s ummer. POLYPOHJ n·Es :-; Peck. 54. HYPO.\! 1·s On CoJ'iolus 1: ersicolor (L.) Que!. ( Polystictus Fries.) Found onre in some abundance in the early spring, probably of the previous year's growth. According to Seave1·* this species is known only from New *:'.\1ycologia 2: 78. 1910. Published by UNI ScholarWorks, 1910 9 Proceedings of the Iowa Academy of Science, Vol. 17 [1910], No. 1, Art. 10 IOWA ACADEMY OF SCIENCE 56 JerseY, ::\"ew York. North Dakota, a d some Canadian station. Probably of ·wide n distribution. 5 5. CLAVICEPS PURPUREA (Fries) Tul. On Agrnpyron repens (L.) Beauv. V. Sclerotia were found rather abundantly, but w ere not germinated so the reference is only provisional. llOTHllll .\LES. onm:Il Family Dothideaceae. PHYLL.\CIIOR.\ GR.Uil::\IS (Pers.) Fuckel. 56. On pat lrt J\Ioench (H. Hystrix l\IiHsp. ) B o te o a Hystrix u u l u curtipendula (Michx. ) Torr., Atheropogon curtipendulus Fourn), SorQlwstrnm ( and nu tans (L.) Nash (S. a e acc Nash). v n mn Very common. PYLL.\CIIORA Ji:mcr Fuckel. interior 'Wiegand. On Juncus Rather abundant in late summer. 58. PHYLLACHORA LESPEDIZAE (Schw. ) Sacc. On Lesperliza capitata Michx. "'ot uncommon. 59. PLowmGIITIA J\IORBOSA (Schwein.) Sacc. On ru u americana Marsh. and virginiana L. P n s P. So personal ob ervati on this species which causes the "Black far as s goes knot" of clrupaceous fruits is confined to the wild members of the genus 1:pon the cho e cherry this disease is very abundant and if infec Prunus. l> tion is IJOSsible from this host then the abundance of choke cherries in this region i s a serious menace to our orchards. orm1·:n RPH.\J:m \LES. Sphaeriaceae. Family 60. rmu Fr es ) ·winter. Vr.:\"JTHI\. ( i [Fusicladium dendrit'icum Fuckel.J ('Wallr.) fl On Pyrus we s (Wood ) Bailey (Mal us B r itton. ) io nsi The c ommo n apple scab is the c:onidial st age of this sjlecies. ?\ot seen on the rultu ivated appl e, but abundant on the wild crab. Fondly JJycosphacrellaccac. Va a & Ravaz. [Laestadia Bi wellii 61. GUIGXARDIA BIDWELLII (Ellis) l d (Elli's ) Sacc., Ph lo tic t ti cola Thum., P. ampelopsidis Ellis & Martin]. yl s a vi On Pseclera uin efo lia (L.) Greene (Parthenocissus Planch.), P. q qu quinque fo7ia ll'irsuta (Donn ) Rehder, and vi tis vulpina L. https://scholarworks.uni.edu/pias/vol17/iss1/10 10 Wilson: Preliminary List of the Parasitic Fungi of Fayette County, Iowa OF IO\VA ACADEMY SCrn:\CtJ The black rot of the grape. Abundant oil leaves and fruits of the g ape wild r and Oil the leaves of the Virginia creeper, being a most st tive p s de ruc e t to both. 62. l\IYCOSPHAERELLA FRAGARIAE ( Tul. ) Lindau. [Sphaeriella Pragariae (Tu!. ) Sacc., Rarnularia Pragariae Peck. . ] On Pragar'ia virginica Duchesne, and e i n Britton. P. arn r ca a The strawberry rust. Very aboundant on the first host named but rare on the last one. Only the conidia were seen. OBDEI\ l'HACIDIALES. Parn ly Phacidianceae. i 63. RHY'l'IS)L\ ACEIU?i Ui>l (Pers. ) Fries. On c saccharinurn L. A er The "'tar spot"' disease of maples was rather ahundant throughout the county during the past season. 64. SALICIC'IC:M (Pers.) Fries. RIIYTU:DLI. On S l lucida Muhl. a ix Found once in fair abundance. 6:J. SoL!lUGL\IS chwein. a RnYn�:ll A S On L., S l a o (L.) Salisb. (Euthamnia Aster cordifolius o id u graminifolia l\Iillsp.) and S. latifolict L. (S. ftexicaulis L.). The exact nature of this species is in doubt, for while it is known ha t t an insect gall always forms a part of the spot there are always fungous hyphae present, but so far no spores havp been observed. ORDER PEZIZALES. ily H elotiaceae. Parn 6G. ScLEROTI?iIA C FR TIUE :-.:A (Pers.) Schrceter. Mo i l a pers.] li [ n i fructigena On fruits of Prunus arnericana Marsh. The common brown rot of stone fruits, which is very to ce t in destructive r a races of both wild and cultivated plums and cherries. CL O I A 67. S ER T NI (Hedw.) Fuckel. 'l'UUEH08A On A.nernone quinquefolia L. A single small clump of this species has been collected. The subteranian sclerotia are attached to the rhizomes of the wood anemone. In some localities the fungus is abundant enough to be quite destructive. Pa ily Mollisiaceae. rn :\Ior,usrA (Rabenh.) Karst. 68. D1m:-.:n Potentilla on len is L. On m seq:ia s Abundant on stems, leaves, and leaf veins of the host in early summer. Published by UNI ScholarWorks, 1910 11 Proceedings of the Iowa Academy of Science, Vol. 17 [1910], No. 1, Art. 10 10\''A ACADK\IY OF SCIE�CE CLASS DIWTEROl\lYCETI OHIJEll l'IIO�L\TALl<'.S. Pam.ily Phomataccac. 6�. PHYLLOSTH''L\ Al'OC Y .\I T el. r On anarosac111 ifolium L. Apocynnin Not common, midsummer. 10. PHYLLOST! l"L\ C01wu \\'est. On Co ryl11 s mn criea11a L. A fairly common but not over abundant leaf spot. Probably the present species, as is the case in e r ain other members of the genus, is associated with c t a leaf miner or some other insect. PHYLLOSTl('T.\ llE('l!lL\ Ellis & Kellerm. j'J. On Lycop11s rnlJcll11s l\Tom1ch., and Mentha canadensis L. Quite common and often resembling, at least to the casual observer, the >Y ork of inseds . P 11 YLLOSTWL\ JJISl'L\C'L\ . .J. Davis. .T On Crnlaria qraiuliflorn l On adi·c11 ri Ait. Xy111plrnm Not uncommon, bnt in no wise an abu11dant species. Midsummer. PIIYLLOSTl("L\ f; E.\TL\.\l(OL\ (DC.) Ellis & Everh. 7+. On Ge11tia11 a Anrlrcwsii Griseb. A n s icu o s . lm t rather uncommon species which ppea s in early sum rn p u a r mer. • PnYLLOSTH"I'.\ G1mssi·r..\HL\E Sacc. 7 :J . On Ri/Jrs qra.cile l\lichx. Very eommon and abundant in midsummer and autumn. Some bushes were complete!>- defoliated by he middle of August. i 7 6. PrrYLLOSTI<'T.\ :-.w1..\ u:i•c.\ J On [' l111 11s amerir·auri L. �ot rare on sprouts of el m , appearing fi rst in midsummer. , , . P11YJ.LOSTH"L\ 1'�11is & FJverh. Ri·DnH' KL\E On lal'i11iuta L . R1ul1Jeckia Common and abund nt OIL the wile! plants by the first of August and a con tinuing till froRt. The variety under cultivation appears to be free from the fungus. PILYLLOSTIC'L\ V10L.\E Desm. 78. On Yi ola sp. Common on the blue violet of the region. https://scholarworks.uni.edu/pias/vol17/iss1/10 12 Wilson: Preliminary List of the Parasitic Fungi of Fayette County, Iowa IOWA ACADEl\1Y OF SCIENCE i9. A�IPELO:.\lYCES QUJSQL\LIS Cesati. On Erysiphc cichoraccaruin DC. on A"ster sp., Verbena stricta Vent. , and V. urticifolia L. On Porlosplt acra Oxycanthac (DC.) de Bary on Prunus americana Marsh. Very common on the mycelium of various species of Erysiphaceae but not collected except as above. Probably every species of the family could be added to the list of hosts for this interesting species. 80. llscof'hyta Oxybaphi Trel. On o :rybaphns nyctagincus (Michx.) Sweet (Allonia nyctaginea) Michx. Rather common but neither abundant nor conspicuous. 81. AscocnYT.\ V10LAE Sacc. & Speg. On Viola pubesccns Ait. Not uncommon in midsummer. 82. DeL.\HCI.\ (Riv. ) Cast. FITT�t On PiLccinia A.s.paragi (DC.), on Asparag us officinalis L., Metampsora Bige lovAi Thum., on Salix fluvitialis Nutt., Medusae Thum:, on PopulilS del· 1lf. toicles :VIarsh., Fromycss Silpllii (Burr.) Arth. on Juncus interior "Weigand. Common and abundant on the uredinia and to a less extent on the telia of various species of rusts. • 83. SEPTOHL\ ACHBIO:>IA Roum . On Agrimonia rnollis (T. & G.) Britton. Rather common on stunted plants in .J uly and August. 84. SEPTOHI.\ CHYPTOT.\E:>Lrn Ellis & Ever. On Asclepias incarnata L., and A. syriaca L. Rather plentiful and quite conspicuous during the later summer and early autumn. 85. SEPTOHL\ ATHOPUHPUHE.\ Peele On Aster corrlifolius L. The reddish brown discoloration render this a very conspicuous species, although it was not very abundant during the past season. 86. SEPTORL\ (Lev. ) Ellis. CAl\IPAXULAE On Campanula arnrricana L. Common and abundant during late summer. The peculiar seared appearance of the leaves renders this a rather C'Onspicuous species. 87. SEPTOHI.\ CAXJ\'ABINA ·west. On Cannabis sativa L . • Abundant on hemp from late July to frost, producing spores freely although sometimes said to fruit sparingly. 88. SEPTORL\ CO!'>RPICl!A Ellis & Mart. On Steironema ciliatum (L.) Raf. Rather scarce, appearing in early summer. Published by UNI ScholarWorks, 1910 13 Proceedings of the Iowa Academy of Science, Vol. 17 [1910], No. 1, Art. 10 OF 60 IOWA ACAlH SEPTOHL\ CnYPTOT.\E;-;L\E Ellis & Rav. (JO. L. Cryptotocnia canarl cnsis DC. (Doeringia Kuntze ) . On ( ) Common throughout the early s er , sometimes almost covering the en umm tire leaf. 91. SEl'TORL\ C,\CT \LL\ E Desm. On Caccalict rcniform nhl. ( Masadenia Raf. ) is M Fairly common rl uring tl e flowering easo of the host. i s n SEPTOHIA Emis & Everh. 92. DIElffILL.\E On Dic1Tilla Lonie-era Mill. Diervilla (D. l\facl\I.) Kot abundant. seen only on .July :w . 190!J. SEPTORL\ Peck. 93. Emc1·:no:\"TIS On Rriueron annuus L. Pe s .. anrl ramosus (Walt.) BSP. ( ) r E. Common abund nt on both hosts. especially the for er and a m . L.\C'!TCIOL.\ Ellis & Everh. 94. SEPTOHI.\ On ''anarlensis L., anrl h rs ta Muhl. Lactuca L. i u Common but not almnclant during midsummer. 95. SLPTOHL\. LEPTORT.\ CIIY.\ Ellis & Everh. On Pllrym a Lcptostaf'/1 ya L. Common during the nmm and rather conspi cuo s er us. 96. SEPTORL\ :IL\LHCOLA Ellis & Mart. On 11.fali:a L. rotundifolia Rather rommon plentiful clnring- the summer months. and oc n.\TA E li & K(�ll. !17. 81-:PTmn.\ l s On Vernonia a t ss . a 'Nutt. (V. m a i Small). l i im x m Rather abundant rhiring- late summer. 98. Sr:PTOHL\ OEi\'OTlIER.\E B. & C. On Oenothem li ie11nis L. (Onagra Seop. ). One of the commonest aml most a u n species of the genus, ardl a b nda t h y of the the of the fungus. plant host psraping ravages SEPTORL\ PAIUETARL\E Davis. 99. .r. .T. Parietaria JJc11 11s11l1:anica On L. Common aml rather abundant in some patches of the host and less plentiful in others. The infection tha of c os l . resembles t S. Campanulae quite l e y SEPTORU POIJOPIIYLLINA Peele On100. L. Porloph117l111n peltatmn Common on the languishing leaYes of the host, and easily overlooked on account of the lack of definite spots and the resemblence of the n ection to i f dying lea Yes. https://scholarworks.uni.edu/pias/vol17/iss1/10 14 Wilson: Preliminary List of the Parasitic Fungi of Fayette County, Iowa IOWA ACADEMY OF SCIEI\CE 61 101. SEPTORIA PREXAXTHIS Ellis & Everh. On Prenenthcs alba L. ( abalu s albus Hook.) N ot abundant. I\ 102. S O estend EPT RI.\ Rc:m W . occidentalis L. On Rubus Of exceptional occurrence during the past season but probably abundant both on and c ult i vat ed berries. This is frequently a very destructive pest. wild ScnoPnt:LAHLu; Peck. 103. Sr·:Prnm.\ On marylanclica L. Srropl1 ula 1·ia Common a1�d abundant throughout the summer. SCTTELLAHIAE Thuem. 10-1 SFPTOHT.\ On Srntcllaria lateriflora L. Onl�· seen once during the past season, apparently not an abundant species. 105. Sr:PTORIA Sru:xEs Westd. On stellata (L.) Ait.f. Silene stat i o n not.Pel , but here i n fection was abundant, sca rc ely a A single the full grown remain ing healthy. leaf 106. SI:PTOHL\ Ellis & Mart. S:1nLICANAE On raceinosa D esf. (Vagnera Morong. ) .. Sm'ilicana (L.) Of rather (' 0111111 on occu rrence and usually abu n ant in i n fec ed clumps. d t Sn'TOHL\ 101. ToxH'ODENJmt Curtis. On ( R. rad icans L. ) Hl111s ToxicodP1t(/ronL. Probably rnmmon and abundant. 108. SEI'TOHL\ Desm. URTIC.\E On ra11adcnsis Gaud. (Frticastnm cliva ricatum (L.) Kuntze ) Loportea. (L.) . Not comm on nor abundant. Fa mily Leptostromataceae. LEPTOTHYlUl} �l PO)I I ('Mont. & Fr.) Sacc. lOG. L. al us Malus Britton). On Pynrn }fains (M The fly speck disease of apples. Not uncommon, but not destructive as it is ne the cortical cells of the fruit which it disfigures more than it in· confi d to ju res. GALTI Ellis & Everh. 110. MF:L.\s:1rr.\ On Galimn 1J 01'Calc L. Xot common . • J\IELAXCOXL\LES ORDER Family clanconiaceac. JI CYLIXDROSPOR!li:II HUJ\IULI Ellis & Everh. 111. On Hmn ulis L1lp1llits L. Xot common, but the infested vines are usually well infected. Published by UNI ScholarWorks, 1910 15 Proceedings of the Iowa Academy of Science, Vol. 17 [1910], No. 1, Art. 10 IO\\' A ACADK\IY OF SCTE:\Cr: 62 :\l .\ H;sO:'iI.\ .JcGL.\:'iIHS Sacc. 112. On Juglans cinerca L. Common and abundant on the butternut which is sometimes almost de- foliated by the fungus. 113. Gu:osPOH!UM CO.'iFLLE:'iTIS J On Sagittaria latifo lia Willd. Common and eonspicuous, fret1uently almost destroying tile leaves. GLEosromuM Ellis & Everh. 114. D.\nsu On Latltyrus vcuosus Muhl. A single eluster of pods were found infected in early August. ORDEI\ :\IO.'iILTALES. Family Jloniliaceae. 15. ALTEHXc\ HL\ BHASSIC.\1: (Berk.) Sacc. l On B rnssica n ig (L.) Korh. rn :\ot eommon. but rather conspicuous, probably to be found 011 other closely related hosts. Ar:n:H.'i.\ KL\ P.\.'i.\ X ·whetzel. 116. On Pauax quinq11cfolia L. A very destructive pest in genseng beds but so far not observed on the wild plants. It is only by the most persistent efforts that growers are able to pro duce a crop. SEPToc1.1.11rnHffM HlTO.\L\ l'l'L.\ .'iS (Peck) Pound & C lem ent . [Ram u/aria 1 17. s rufomaculans Peck.] On Polygonmn aviculare L. Common and abundant, o"ften almost defoliating its host. l\lO:'ilLL\ .·L\G L' STIOH (Sacc.) Reade. 118. On Prnnus virginiana L. Common, but nowhere abimdant on the immature fruits of the choke cherry. Probably the l'Onidial phase of some speeies of 8c7erotinia. D l Y L\ H \ ll lllBL\ (Unger) Pound. [Ham 11/aria cl itlyma Unger, D. 11 !J. D ;\ L Un Corda.] (IrTi On Ranunculus rccurvatus Poir, and scptentrionalis Poir. R. Common, but not very abundant. A ('onspicuous fungus owing to the frosted appearance of tile conidiophores and the large e11iphyllous discolora tions. R.\J\J l"T"\HI .\ ArurnB.\ CfA Fuekel. 120. On Rarlicula Armorncia (L.) Robinson (Roripa A. S. Hit.eh.). A very abundant spec:ies, acpr tically every plant of horseradish being infected. l "L.\l!I.\ AH\'E:\ Sac c. l :?1 R.Dl Sl8 On Potentilla monscpalen sis L. A common leafspot in the later weeks of summer and during the autumn. https://scholarworks.uni.edu/pias/vol17/iss1/10 16 Wilson: Preliminary List of the Parasitic Fungi of Fayette County, Iowa IOWA ACADEMY sc rnxCJ•J 01'' Peck. 19'J RA:..11·L.\HI.\ R1·1iBECKII On Hurlbeckia laciniata L. Xot uncommon in midsummer. J 2:1. Karst. RnrrL.\RI.\ T.\JL\XIC.\ On 7'ara.rar111n Weller (T. Taraxacum Karst. ) offir·inalr: Common and abnndant, especially in early summer. C1-:1wosPon.1 Ellis & Holw. 12�. Aus:..L\Tis On A.lism a Plantaf!O-aq1wti('rt L . Neither common nor a\.Jumlant. Appearing in early summer. �;). C1·:JH'OSPOH.\ A \I P1.:i.ov�1111s Peck. 1 On Pscrlcru q. ui11q11cfolia Greene (Parthenocissus Planch) and P. quin (L.I qu o i rsu ta (Donn) Rehder. cf lia 71 Common and abundant. causing defoliation in some cases. This is a more destructive fungus than Gitif!1Wrtlia Bidwellii as it covers more of the leaf surface. 126. CEHCOl'lPOIL\ .\ XTIPl'R E:llis & Holw. i On Lonicrrn S ll ran t i A. Gray. u i Common. the infected vines usually with but few healthy leaves .. but the S[Jots are small and f'pw on leaf. Appearing in midsummer. a CEHCOSPOR.\ Sacc. 1 :!7. ('.\ X.\ P On Erif!eron a111w11s e rs ., cancul cnsis L. (Leptilion Bratton.) (L.) am! FJ. Common and abundant, es[Jecially on the first host. This species was later ma(J e the type of the genus Ccrcosporclla Sacc., which is distinguished from Ccnosvora by its hyaline ronicliophores and ronidia, a distinction which cannot Ile accepted as valid. C1-: 11cospon.1 C.\l:LOl'IIYLLI Peele 128. On Ga11 loplq;llurn thalidroidcs (L) . Michx. Hather common, !Jut not abundant. The fungus appears abo11t the time the ]Jprries are full g\·own. Ci.:11cosPOH.\ CIIE:\'Ol'Ollll Fries. 12!1. On Ch('lloporlfo1n album L., and G. albuni ·vircle (L.) Moq. Common and abundant in summer and autumn. CnwsPORA CLAV.\'L\ Gerard. J '.JO. On Asclepias syriaca L. Xot uncommon during midsummer. 1:n. Ci-:ncmiPO!L\ DA nsn E:llis & E:verh. On clilotus alba Desv. ;}J Found abundantly in one locality in July. Ci-:ncosPOH.\ D10scom:.\E E:llis & Martin. 1 :12. On Dioscorca villosa L. Xot common, and when present infecting but a few leaves. Published by UNI ScholarWorks, 1910 17 Proceedings of the Iowa Academy of Science, Vol. 17 [1910], No. 1, Art. 10 IOWA ACADE:\lY OF SCIEXCE 64 1 3 3. CERCOSPOIL\ Ecur:--;oCYSTlDIS Ellis & Martin. On Ecltinocystis lulJata (l\lichx.) T. & G. (Micrampelis Greene.) A single vine was fuund scantily infected. 134. CEHCOSPORA GERAXII Kell. & Swing. On Geranium maculatuin L. Found sparingly in midsummer. 135. CERCOSPORA GRAXULIFOR�!IS Ellis & Holw. On Viola sp. Not uncommon in midsummer. 136. CERCOSPORA HEUCHERI Ellis & Mart. On H euchera ispi a Pursh. h d Infrequent, but with an abundant infection where found. Collected in July. 13 1. CEBCOSPOBA lHEXISPER'Il Ellis & Holw. On ilienispermiurn canadcnsis L. Common and abunqant during the entire summer. Ox n 1 3 8. C1-:ucosPonA .\PHI Ellis & Holw. Y On OxylJaphus nycta in us (Michx.) Sweet (Allonia Michx.) g c Not common nor abundant. Collected during midsummer. 139. CERCOSPORA Cooke. POLYGOXORC:\[ On PolygonU?n Hydro11iper L. ' l\ot uncommon and where present quite abundant. The blackish hypophyl lous growth makes this a very conspicuous species. 140. CERCOSPORA RACE�I08A Ellis & Mart. 'l'cucrinin ca11wlc11sc L. On ::-Jot very common but fairly abundant in infected patches of the host. Autumn. J 41 . CERCOSPORA ROSAECOLA Pass. On Rosa p ratincola Greene. Xot common, apriearing in midsummer. 142. CEBCOSPORA Sn Ellis & Everh. On Simn cicutaefolium Gmel. Not commori, but where present rather abundant. Midsummer. 143. CERCOSPORA TOXICODENDBI Ellis. On Rhus 'l'oxicoilemlri L. (R. radicans L.) Not uncommon and in some places at least, quite abundant. The infected areas suggest the work of some insect as the discoloration is about the same as that produced by the drying sap of the host. On the under surface the conidia give the spots a frosted appearance. The species is of more than ordinary interest as the note appended to the descrip tion in Ellis and Everhart's Enumera tion of the North American Cercosporae is "On leaves of Rhus Toxicodendron, https://scholarworks.uni.edu/pias/vol17/iss1/10 18 Wilson: Preliminary List of the Parasitic Fungi of Fayette County, Iowa IOWA ACADEMY SCIENCE OF Newfield, N. J. Not since found, and hence doubtful."* The material agrees thoroughly with the description and so removes this from the list of doubtful species. 144. CERCOHI'OR.\ V.\RL\ Peele On Viburnum Lcntago L. Not common or abundant. Midsummer. 145. CEHCOSI'OR.\ Zl•:nm Pass. :\.\ On Trifolium vratensc L. Rather a common disease of the red clover, but probably not causing much loss to the crop. 146. ScoLECOTmc1n:M r: icu1r:\1s Fuckel. On M11l1 lcnb rrgia Mexirnna (L.) Trin. Common, late summer and autumn. 147. POLYTHR!:\('ll'.11 THIFOLII Kunze. On 'l'rifoliurn vratcnsc L., and T. rev cns L. • Abundant on both white and reel clover during the entirn summer. This is said to be the coniclial stage of an Ascomycete but is retained here as the perfect form was not collected and the following quotation indicates that the species is really not well !mown. "On account of the characteristics and habits of the mycelinm and of the strorna sometimes vroclucecl, it has been assumed that the perfect stage would be a species of Pll 11 llacl1 ora. and the plant actually bears also the name l'li './fllw11 ra Trifoli.i (Pern. ) ;J I''cJd."·;· 48. CL\IlOS!'OHI i· \I T 1\ ws1·:T 1 Peele J On Ti'i osctum vci"foliaturn L. Xo;· rare in midsummer. HLL\I J:\"rI IOSl'Hlt·.11 <;11.1\11:-;u·\r Rabenh. 140. On i.·ulqare Jlor1/c11 m L. Yeo• almrnlant duri n t past summer using a '"on s i derabl e shortage in g lw .. a the crop. l".II 01 .1 ·'1 Ellis & Everh. l�O. .\ L\c1rnsPom 8 On Datura Tat 11la L. Common am! abundant ro u hout th g the snllllllN. Fa mily T11l!c1·(· /llariaccac. Tt·m:i:ctLI.\.� l'i·: f:>' f('f:-;.1 Ditm. ]; )1. On aeda of Ureclinales : P r · i n ia Caric is-astcris Arth i-iolirla170 lati tlle w· .. on e i c n lis 1. 1'111·ci11 fra.rinala . Oil !olia L. ( S. f1 x a L. ia (Sch II".) A l'tll . Fro.ti nus an1 ericana L., J'1U·1-i11ia Opizii O il T, acl11«a I'erkii BnbaL, (·mrnrlc11sis L .. P1u·!'i11 ia (De T. ) Kellerm . on Bicnnis Onag ra Scop. ). i'll«(·inia Plll"ymae . Oenot/icra. L. ( ( a st ) oil Plll"Jflirn f, e.plostac71 JJI"! H i . Artll., L. *.Tour. J\Jyc. :62. 1 1880. �'ungons of Plants ·:· Duggar. Diseases �!JR. 1�110. .; Published by UNI ScholarWorks, 1910 19 Proceedings of the Iowa Academy of Science, Vol. 17 [1910], No. 1, Art. 10 SClK\JC'E IOWA AC.'. IJE:.\lY 01•' on various aecia, appearing l argo or small purpulish Xot ;,mcommon as tubercles. Ft·s.\Hlt�1u P�\IL\SITICU::\I E is & Ke11. J:J:?. ll 3Ient11ac Pers., on J'[(J;;anJ.J jistuloso On F;w..i. 11 ia. L. Rather abundant, e:;pocially previous to th e appearance of the jm:t telia. Ellis & Everh. 153. Fus.\HlF\r 1:mmL\EliM B igcl wii Thum., on al x lucirlci l\I uhl., and M. Medusae On Jiclamvsora o S i on POJH! llls (l elt(JiClCS T· hllHl ., nJarsh. common on the ureclinia of these two species, giving the sari the ap Hatller pearance bein g rnYored with a white mould. of CLASS BASIDIOJ\IYCJ OllDEJl lISTIL.\GlNJ.ES Pamily r·stilaginaccac. S1\i11g. s cg c t11m p. i:; 1. (' :-; �-; J.\co :;u:·. Pn (1-'ciT.) Ecll. & IL·. Jl. I L. 0;1 Ilorrlcum 1.:ulqarc destructive . Alrn::•.1 Srnp. (Synt!Jerisma Dulac.) Or!. l!ir('cr : :u w«r111 inalis (L.) f__ ;;..;·, 1 r..\_co rrnHTLoS.\ (Xees) JG7. Tu1. pcn11sylva11icum L. 01: Polyuo11 :n11 lfi.pathifoli!lm L., anll l'. c.oninJoH lal.e sunnner ancl autun1n. £-l;.�.:;e ; r ia .\li.qno-.u.r :mC.\C\li.\I (S11eg.) Beck. (Fstilago Speg.) liiS. :\J1:L\:\OI'Srcn\r"1 G. inn L. On TtJlJ/f/On lapat hy/oUnni Rare, 01· sm al sori being found in early antumn. 0111,- three Ima· l iw nnsyhanicci On Care::; L. Alrnnd:mt s11ring and early summer. in T'! Ifenn. [L"slilago Synthcrismac Peek ., not I CO. :::"rn'TO: CL.\CllHr P. :F'ar1o\v.l Sch\\·t=:in., �)· . :�·y;,'ll1e.'·i,1.,1nac: rus tri/Jnloitlcs L. On Ccnr-1: Abundant in autumn. The s ec ific i s based on a mis p name Syntherismac interiwetation sw'citic: limits which is analogous to a misdetermination in so of r IOWA ACADEMY OF SCIENCE 67 161. UROCYSTIS ANEMONES (Pers. ) Winter. On Anemone quinquefolia L., and Hepatica acutiloba DC. (H. acuta Britton.) Abundant! in early spring. On Anemone frequently associated with other ..,/ fungi. 162. ENTYLOlliA AUSTRALE Speg. [E. Physalidis (Klachb. & Cooke) Winter, E. Besseyi Farl.] On Physalis pruniosa L. Abundant throughout the summer, partially defoliating the host. 163. ENTYLOlliA 00:\IPOSITARUllf Farl. On Ambrosia arteniisiaefolia L., A. tri{ida L., A. trifida integrifolia (Muhl.) T. & G. Bidens frondosa L., and Lepachys pinnata (Vent.) T. & G. (Ratbida Barnh.) Common and abundant throughout the summer. 164. ENTYLOlliA MENISPER1U Far] & Trel. On Menispermiurn canadense L. Rare, in late autumn. • 165. ENTYLONA NYlliPHAEAE (D. D. Cunn.) Setch. On Castalia tuberosa ( Paine) Greene. Not common. Collected in late July. • 166. ENTYLOlliA POLYSPORUlli (Peele ) Farl. On Ambrosia trifida L. Not common, throughout the summer. 167. ENTYLOlliA SANICULAE Peele On Sanicula sp. Not common on the root lea ves in early spring. 168. DOASSANSIA DEFORJ\IAXS Setch. On Sagittaria latifolia Willd. Common and rather abundant on scapes, peticles, and leaves producing very prominent hypertrophy of the host. Late summer and autumn. ORDER UREDINIALES Family Coleosporiaceae. 169. CoLEOSPomu11r SoLIDACIXIS (Schw.) Thuem . .. On Aster cordifolius L., A. puniceus L., sp. indet., Solidago canadensis L., A. S. latifolia L. ( S. Ait. flexicaulis L.), and S. serotina One of the most abundant of our rusts, and one with an exceptional range of hosts. Midsummer and aut umn. Family JJ!lelampsoraceae. 170. MELA�IPSORA BIUELO JI Thuem farenosa (Pers.) Schroet.1 W [1-YJ . On Salix amygdaloides Anders., S. humilis Marsh., S. interior Rowlee, S. longifolia Muhl. ( S. fluviatilis au th., notNutt. ), and S. lucida Muhl. Common during summer and autumn on willows. Published by UNI ScholarWorks, 1910 21 Proceedings of the Iowa Academy of Science, Vol. 17 [1910], No. 1, Art. 10 68 IOWA ACADEMY OF SCIENCE 171. MEL.HIPSORA Lnu (Schum.) Desmaz. On Linum sulcatum, Riddell. A single collection in the later part of June. Scarce. 172. MELA�lPSORA MEDl:SAE Thum [M. populina Jacq.] On Populus deltoides Marsh. Abundant on the Carolina poplar throughout the summer and autumn, but not noted on any other species. of Popitlus. 173. PrccenASTRUM AoRIMoxrAE (Schw.) Tranz. ( U redo Agrimoniae DC.) On Agrimonia gryposepala Wallr. (A. hirsuta Bicknell), and A. mollis (T. G. ) Britton. & Not a common rust. Late summer and autumn. 174. PuccrNIASTRUM PYHOLAE (Pers.) Dietel. On Pyrola elliptica Nutt. The uredinia collected sparingly late in May. 17 5. H ALOPSOHA PoLYPODII (DC) Magnus [Uredo Polypodii DC.] Y On Cystopteris fragilis (L.) Bernh. (Filix Underw.) . ' Rather abundant in a single locality in the middle of July. 176. P H L E (DC.) Arth Chrysom xa pirolatum (Schw.) MELA;\!PSOHOPSIS Y O A [ y Wint.] On Pyrola ellipti ca Nutt. Rather abundant in May. 177. CRO:'i"ARTIUM Co111ANDRAE Peck. On Comandra pallida A. DC. A small clump of the host found infected in early October. Family Pucciniaceae. 178. P LEOL RU ToxwoDENDHI (Berle & Rav.) Arthur. [Uromyces Toxico 1 A clendri Berk & Rav. ] II, III on Rhus Toxicodenclron L. (R. rad:icans L.) Not an uncommon rust, but the inconspicuous telia render it easily over looked. Pers., 179. THAXZSCHELIA PU N C TA (Pers.) Arth. [Aecid'ium punct atum TA A. Schw., 1 Uanunc ulacearum. DC. Puccinia pnmosmn Link, P. hepaticuni A. . pruni-spinosae Pers.] I on A e on quinquefolia L., and Hepatica acutiloba DC. acuta Brit n m e (H. ton.) II, III on Pruniis americana Marsh. ,f The aecial stage is one of the commonest and most abundant of our rusts. The later stages are usually abundant where found, but not so common as the aecia. The mycelium appears to be perennial in Anemone and Hepatica so this stage can appear without indicating the probable abundance of the rust on the alternate hosts. https://scholarworks.uni.edu/pias/vol17/iss1/10 22 Wilson: Preliminary List of the Parasitic Fungi of Fayette County, Iowa IOWA ACADEMY OF SCIENCE 69 PoLYTIIELIS n- '=ic.\ (Pers.) Arth. [Puccinia fuscum (Pers.) Winter.] lilO. On Anemone uinquefol a L. q i This is one of the most abundant of our early rusts, the sori appearing' some- times before the leaves are full grown. 9nly O and III. 181. oPY rs U x ( M. A. Curt.) Schroter. [Pu cinia AmorqJhae n A�ronPIL\1" c M. A. Curtiss.] III on Amorpha fruticosa L. Common in late autumn, and usually abundant where found. 1 82. PHRAGMIDIUM Ros.rn-ARKANSANAE Dietel. I, II, III on Rosa pratincola Greene. Rather uncommon and not abundant. 183. GDIXOCOXL\ IXTERSTITIALIS (Sehl.) Lagerh. [ Uredo caeoma-nitens Schw., Gaeoma nitens Schw.] On Rubus sp. indet. Common on the wild blackberry. " 184. KuEHXEOLA PoTEX'l'ILLAE ( Schw.) Arthur. [Phragmidium obtiisum (Straus) Winter.] II, III on Potentilla canadensis L. Rather common. The primary uredo of this species is the first rust to ap • pear in the spring. 185. GY�IXOSPORAXGIC:II CORXICULA::'\S Kern. On Amelanchier canadensis (L.) Medic. Pycnia and immature aecia were collected just as the leaves were falling from a tree badly infested with Dimerosporium Golisonii. "The telia of this species are to be found on the branches of the red cedar and produce galls which are woody and irregularly globular, ranging from a few millimeters to two or three centimeters in diameter. They are readily told from the galls of Gym. Juni peri-virginianae, but are not unlike those of Gym. nidus-avis. Only one collection of the telia has yet been made. (This) was obtained in northern ;\Iichigan." Arthur in Litt. 186. GY::IIXOSPORAXGIU:\I GLOBOSUM Farlow. [Roestelia lacerata Fries.] I on Grataegus punctata Jacq., and rotun i olia Moench. a. dJ f III on Junipcrus virginiana L. Common and abundant both on the cedar and the thorn. Of the last scarcely a healthy leaf remains on many trees. 187. GY:irxosPORAXUIL\l Schw. [ G. macropus Link, .TUNil'ERI-VIRGI:NL\XAE a Roestelia pyrata Thax.] I on ioensis (Wood) Bailey (Mains Britton), and P. Malus L. (M. Mal us BrPyrusitton.) III on Junirperusv irginiana L. Very common and abundant. The cedar apples are more conspicuous than in the preceding species, but locally no more abundant. The wild crab is most Published by UNI ScholarWorks, 1910 23 Proceedings of the Iowa Academy of Science, Vol. 17 [1910], No. 1, Art. 10 70 IOWA ACADEMY OF SCIENCE seriously affected, leaf, twigs, an d fruit bearing the rust while the infection on the cultivated apple is only nominal. 188. GYMNOSPOBANGIUM Nmus-AVIS Thaxter. III on Juniperus virginiana L. Not uncommon on cedar trees on the windwar d side of high bluffs, but so far not taken on the leward side of hills or on level land where the wind is broken at a short distance. 189. UROMYCES ACUMINATUS Arth. II, III o Spartina cynosuroid:es Willd. n Not uncommon. Probably the aecia of this species appears on Polemonium. 19 0. UROMYCES ALBUS D. & H. I on Vicia americana Muhl. The aecia were rather abun dant but telia were not observed. This is the only species of Uromyces we have which omits the uredinia. 191. UROMYCES CALADII (Schw.) Farl. [A.ecidium Oaladii Schw.] I, II, III on A.risaema triphyZZum L. Schott. ( ) .- I on A.risaema dracontium (L.) Schott. One of our most abundant and most conspicuous rusts. 192. UROMYCES EuPHORBIAE Cooke & Peck . [ A.ccidiuni Euphorb iae Schw.] I, II, III on Euiphorbia humistrata Engelm . Common and abundant. The erect habit of the plant infecte d with the aecia renders it a comparatively conspicuous species. 193. UROMYCES FABIAE (Pers.) de Bary. [A.ecid:ium porosum Peck.] III on Lathyrus venosus Mu l., and Vicia am,ericana Muhl. h Not common nor abundant 194. UROMYCES HOWEI Peck. II, III on A.sclepias syriaca L. Rather common and where found quite abundant. 195. UROMYCES LESPEDEZAE-PROCUMBENTIS (Schw.) Curt. [ Lespedezae U. (Schw.) Peck.] III on Lespedeza capitata Michx. Not very common nor overly abundant. 196. UROMYCES PYRIFlJRMIS Cooke. III on A.corus calamus L. Rather abundant on the only clump of the host visited. October. 197. UROMYCES RUDBECKIAE Arth. & Holw. III on Rudbec7cia laciniata L. Common and abundant on the wild form of the host but not seen on the cultivated variety. The only Uromyces in our territory which produces telia without either aecia or uredinia. https://scholarworks.uni.edu/pias/vol17/iss1/10 24 Wilson: Preliminary List of the Parasitic Fungi of Fayette County, Iowa IOWA ACADEMY OF SCIENCE 71 198. Uno:icrYcEs S1Lrnn (Syd.) Arth. [U. Junci Tul.] I on Silphium laciniation L. (Herb. Arthur.) II, III on Juncus Interior ·wiegand. single sorus of the ::ecial stage was found while the other stages are very A common. 199. Uno�.IYCES TRIFOLII (Hedw. f.) Lev. I, II, III on Trifo limn repens L. Rather abundant on the white clover, but not found on the red. 200. PUCCINIA ALBIPERIDIA Arth. I on Ribes Oynosbati L., R . florid.a L'Her., and R. gracile Michx. Very abundant on both species of gooseberries, but scarce on the currant. It is possible that two species are included here but as the corresponding forms on Oarex have not been collected it is rather difficult to say. 201. PuccrnrA ANEl\WNEs-VrnGINIANAE Schw. On Anemone virginiana. Common from early spring to late autumn. Aecia and telia both lacking. • 202. PCCCINIA ANGUSTATA Peck. III on Scirpus atrovirens L. Found sparingly in late autumn. The aecia, which are on Lycopus have not • been collected here . 203. Pccn:-;IA Asparagi. DC. II, III on Asparagus officinalis L. Common, especially on wild asparagus, sometimes becoming a pest in gardens. 204. · PCCCIXIA ASTERIS Duby. On Aster cordifolius L. and paniculatits Lam. A. Common and often very abundant.· Aecia and uredinia absent. 205. PCCCL'iIA C RICI -ASTERIS Arth. [AECIDIUM ASTERATUl\1 Schw.] A A I on Aster cordifolins L. II, III on Oarex c ephalop hora Muhl. Rather rare, both ::ecia and the other forms appearing in midsummer. 206. PuccrnIA CARICIS-ERIGERONTIS Arth. [Aecidium erigeronatum Schw.] on Erigeron (L. ), Pers., E. canaclense L. (Leptilion Britton), and I anniws E. philade lphicits L. t Abundant, but the telial stage has not yet been collected. 207. PUCCINIA CARICIS-SOLIDAGINIS Arth. I on Soliclago latifolia L. ( flexicaulis L.), S. serotina Ait., and S. ulmi· S. • Muhl. folia Common but not abundant. 208. PUCCINIA CrnCAEAE Pers. On L. Oircaea littetiana Common and rather abundant, Aecia and uredinia wanting. Published by UNI ScholarWorks, 1910 25 Proceedings of the Iowa Academy of Science, Vol. 17 [1910], No. 1, Art. 10 !OW A ACADEMY OF SCIENCE 72 209. PuCCINlA CLAYTONL\'l'A, (Schw.) Arth. I, III on Olaytonia virginica L. Common and abundant, the iecia appearing with the flowers and the telia , with the ripeni g seeds. Uredinia wanting. � C 210. PUCCINIA ON O ULI (Pers. ) Cast. V LV I, II, III on Oonvolvulis sepium L. The iecia appear in early summer, while the telia persist till frost. Common. 211. PUCCINIA EATONIAE Arth. I on Ranunculus abortivus L. Not common, but the infection usually abundant. 212. PUCCINIA ELEOCHARIDIS Arth [Aecidiuni tenue Schw.] I on Eupatorium purpureum L. Only a few sori found and these in a comparatively dry woods. 213. PUCCINIA EJ\lACULA'!'UM Schw. II, III on Panicum capillare L. Common and abundant. 214. PUCCINIA EPIPHYLLA (L.) Wettst. II on Poa pratensis L. Found in but one locality, but quite abundant there. 215. PUCCINIA FRAXINA'l'A ( Schw.) Arth. [P. arundinariae Schw., Aectctium .. Fraxini Schw.] I on Fraxinus americana L. III on Spartina cynosuroides (L.) Willd. A single sorus of the iecial stage found and only scant infection of telia . • a 216. PUCCINIA HELIA:XTHI Schw. I on Helianthus tracheliifolius Mill., and strumosus L. H. II, III on Helianthus annuus L., decapetalus L., doronicoides Lam., and H. H. grosseserratus Martens. H. Abundant throughout the summer. 217. HYDROPHYLLI Cooke Pe Pt:CCINL\ & ele III on virginicum L. Hydrophyllum Collected in but one station in early spring. Probably the other spore forms are antin . w g • 218. Puccrxu Schw.) Arth . [Aeciclium Iinpatientatum Schw.] hrPATIEXTIS. ( . I on Impatiens aurea Willd. III on Elymus canadensis L. • Neither collection Qf this species represented an abundant infection. 219. PucCINIA KuHNIAE Schw. II, III on Kuhnia eupatorioides L. Not abundant. Aecia wanting. https://scholarworks.uni.edu/pias/vol17/iss1/10 26 Wilson: Preliminary List of the Parasitic Fungi of Fayette County, Iowa IOWA ACADEMY OF SCIENCE 73 220. PcccnnA ( Schw.) Arth. & Holw. MAJ�\XTIIAE I on Polygonatu.m biflorum (Walt.) Ell. (Salomonia Britton.) single plant was found with fficia. A 221. PUCCIKIA MEXTIL\E Pers. II, III on Pycnanthemmn pilosum Nutt. (Koellia Britton), Mentha cana- densis L., and Monarda fistulosa L. Abundant and common. 222. PrccnIA McHLEXBERGIAE Arth. & Holw. II on Muhlenbergia Schrebcri J. F. Gmel. (M. diffusa Willd.) . A single clump of the host was found abundantly infected, in midsummer. 223. PT:CCIXL\ 0Przn Bubak. I on Lactuca canaclcnsis L., and L . vulchclla. The fficia of this speC'ies is not abundant and the telia have been collected in America only once or twirn. The alternate host is an undetermined species of Carex. Pcccrxu PEcrur 11: 224. (De T.) Kellerm. [Aecidium Oenotherae Peck.] I on Oenothera biennis L. ( Onagra Scop.) III on Carex longirostris. The fficia of this species are produced very abundantly in spring and early summer. 225. PrccrxrA PrrnnuE (Hals.) Arth. [Aecidium Phrymae Hals.] I on Phryma Zevtostarhya L. In one woods the fficia are 11roducecl abundantly from early spring to mid summer. P L 226. Prccrxu PDI IJ\E AE (Str.) Link. L On Osmorhiza Claytoni (J\1ichx.) Clarke, and longistylis (Torr.) DC. 0. (Washingtonia sps. Britton.) Autecious. Common and abundant in spring and early summer. 227. PrCCIXIA PLC:\lllERI.\ Peck. I on Phlox paniculata L. (Herb. Arthur.) A single sorus was collected. Dr. Arthur says that the form may be hete roecious, but for the present refers it here. The only other collection of oocia • host is recorded by Tracy who reports it from Starkville, Miss.* on this 228. PucceuA rocuLIFOR1ns (Jacq.) Wettst. [P. graminis Pers.] II, III on Agropyron repens (L.) Beauv., Agrostis alba L., and A. alba vul garis (With. ) Thurb. A common rust. 229. PUCCINIA PODOPHYLLI (Schw.) Link. I, III on Podophyllum peltatu1n L. *Bull. Miss. Agr. Exp. Sta., 34: 90. 1895. Published by UNI ScholarWorks, 1910 27 Proceedings of the Iowa Academy of Science, Vol. 17 [1910], No. 1, Art. 10 . 74 IOWA ACADEMY OF SCIENCE , The conspicuous recia of early spring are followed directly by the inc on spicuous telia, the uredinia being elided. Not as common as the abundance of the host would indicate. 230. PUCCINIA POLYGONI-AMPIIIBIAE Pers. [Aeci iu Geranii DC.] d m I on Geranium maculatum L. II, III on Polygonum amphibiuni L. The recia are rather common, but never abundant, while the telia were col lected but once, then in .fair abundance. 231. PUCCINIA PUSTULATA (Curt. ) Arth. [A. pustulatuni Curt., Puccinia . Andropogi Schw.] I on Nutt., and A. Oomandra umbellata (L.) 0. pallida DC. III on Andropogon furcatus L. Rather a c ommon species, and always abundant when found. 232. PUCCINIA PUNCTATA (Str.) Link. II, III on Galium tinctorium L. Rare, and never abundant. ... 233. PUCCINIA RIIAMNI (Pers.) Arth. [P, coronata Corda.] II, III on Avena sativ a. L. This is the common rust of oats. It is quite abundant, especially on self sown oats. 234. PuccrnIA SILPIIII Schw. On Si lphium perfoliatum L. The t elia appear in early spring and continue in fair abundance throughout the summer. The recia and uredinia are omitted in this species. 235. PucCINIA SonGIII Schw. [P. Maydis Carrau. ] On Zea Mays L. Common, but apparently not detrimental, at least to any considerable ex- tent. 236. PUCCINIA TARAXACI Plowr. [P. flosculosorum (A. Wint.] & S.) II, III on Taraxacum officinale Willd. (T. Taraxacum Karst.) Common and abundant throughout the summer. The recia are elided. 237. PUCCINIA URTICAE (Schum.) Lagerh. [Aecidium Urticae Schum., caracis Aut p.p. ] P. . • I on Urtica gracilis L. Aecia collected sparingly, telia not seen. 238. PUCCINIA VIOLAE (Schum.) DC. I on Viola papiUonacea Nutt., V. pubescens Ait , and V. scabriuscula Schw. . The recla are abundant in spring but later stages have not been observed. 239. AECIDIUM CAMPANULASTRI n. sp. On Oampanulastrum americanum (L.) Small (Campanula americana L.), Fayette, Iowa, June 25, 1909. https://scholarworks.uni.edu/pias/vol17/iss1/10 28 Wilson: Preliminary List of the Parasitic Fungi of Fayette County, Iowa IOWA ACADEMY OF SCIENCE 75 Aecia subepidermal, amphiginous, irregularly scattered over more or less rounded yellowish discolored areas which measure about 5 mm. across, short cylindric or deeply cuplike, 0.4-0.7 mm. across; peridium ample, of irregularly polyhedral cells about 15x20 micra, minutely gr anular ; reciospores globose, .. often more or less angular, 12-18x10-15 micra; wall very light yellow, about 1.5 micra thick, smooth.* Collected but once and then not in abundance. The discolored areas are of sufficient size and of deep enough a color to render the recia quite conspicuous. No trace of pycnia were observed in the material examined. Probably has its alternate form on some grass or sedge. 240. AEcrnru::11 Co111PO I ARUJ\I Mart. S T On Polymnia canadensis L., and Rudbeckia laciniata L. A superficial comparison of the recia on these two hosts is sufficient to con vince one that they belong to two species of rusts. On Polymnia the infected area is rather large, bright yellow, and has the cups scattered irregularly and unevenly over the under surface. On Rudbeclcia the discoloration is pale, tend ing to brownish in the center, the cups being grouped closely on the underside and pale yellow. The collection on Polymnia is interesting as the only previous record for this host is Racine, Wis. The material was found on the windward side of a hill, with no apparent source of infection at hand. The recia on Rud beckia were rather common and fairly abundant. 241. AECIDIUM HYDROPIIYLLI Peck. On Nem ophylla microcalyx (Nutt.) Fisch & Mey. (Macrocalyx Nyctelea Kuntze.) Rather abundant in one station, but no clue to its relationship was found. 242. AECIDIUM HYDNOIDEUl.I B. & C. On Dirca palustris L. A very conspicuous form, but not common or abundant. 243. AECIDIUJ\I POLEllfONII Peck. On Polemonium reptans L. Rather abundant in one station. Prob bly connect d with Uromyces aciimi- a e natus Arth. on Spartina. 244. AECIDIUM XANTHOXULI Peele On Xanthoxylon americanum Mill. An inconspicuous form which was found sparingly on wind swept hillsides in late July. .. ORDER EXOBASIDIALES. Family Exobasidiaceae. 245. MICROSTROMA JUGLANDIS Sacc. On Juglans cinerea L. Not uncommon, causing white areas on the under surface of the leaf. s cylindraceis, vel • Aecis subepidermalis, amphiginis, irregularis disperis, brevi polygoniis, cupuliformibus, 0.4-0.7 mm. crassis ; peridiis amplis, cellulis irregularibus granularibus; sporis globosis, vel ngul riis, 1 2-18 x 10-15 micra ; membranis flavidis vel subhyalinibus, circa 1.5 inicra crassis.a a Published by UNI ScholarWorks, 1910 29 Proceedings of the Iowa Academy of Science, Vol. 17 [1910], No. 1, Art. 10 76 IOWA ACADEMY OF SCIENCE A B Acer saccharinum, 63 Betula papyrifera, 50) ( Acer saccharum ( 48a), ( 50) Bidens comosa, 13 Acorus calamus, 196 Bidens frondosa, 13, (36), 163 Aetheropogon curtipendula, see Bou- Bouteloua curtipendula, 56 teloua Brassica nigra, 7, 115 Agrimonia gryposipala, 35, 173 Agrimonia hirsuta, see A. gryposepala c 26, 83, 173 Agrimonia mollis, Cacalia reniformis, 91 55, 228 Agropyron repens, Campanula americana, 86, 239 228 Agrostis alba, Campanulastrum americanum, see 228 Agrostis alba vulgaris, Campanula 124 Alisma plantago-aquatica, Cannabis sativa, 87 Allonia, see Oxybaphus Carduus, see Cirsium 6 . Amaranthus graecizans, Carex cephalophora, 205 6 Amaranthus retrofiexus, Carex longirostris, 224 9, Ambrosia artaemisiaefolia, 13, 40, Carex pennsylvanica, 159 163 Carp in us caroliniana, ( 43) Ambrosia psilistachya, ( 40) Castalia tuberosa, 165 13, 40, 163, 166 Ambrosia trifida. Caulophyllum thaliictroides, 128 Ambrosia trifida integrifolia, 163 . Cenchrus tribuloides, 160 51, 185 Amelanchier canadensis, Chaetochloa, see Setaria 181 Amorpha fruticosa, Chenopodium album, 20, 22, 129 1 Amphicarpa monoica, Chenopodium album virde, 129 1 Amphicarpa Pitcheri, Chenopodium hybridum, 20 231 Andropogon furcatus, Cinna arundinacea, 42 ) 16 ( Anemone canadensis, Circaea Iutetiola, 208 16 Anemone caroliniana, Cirsium discol0r. 40 2, 16, 67, 161, Anemone quinquefolia, Claytonia virginica, 209 179, 180 Comandra pallida, 177, 231 Anemone virginiana, 201 Comandra umhellata, 231 Apocynum androsaemifolium, 69 Convolvulus sepium, 210 Arisaena dracontium, 191 Coriolus versicolor, 54 risaema triphyllum, 191 A Cornus alternifolia, 43, 89 Asclepias incarnata, 84 Cornus fiorida. (50) Asclepias syriaca, 84, 130, 194 Coruus paniculata, Asparagus officinalis, 203 52 Cornus stolinifer, 50 40, 204, Aster cordifolius, 65, 85, 169, 50), 205 Corylus americana, 43. ( 70 Crataegus punrt,ata, 186 Aster Iaevis, 40) ( Crataegus rotundifolia, 186 �· Aster paniculatus, 204 Crataegus sp., 50) Aster puniceu , 40, 169 ( Cryptotaenia canadensis, 90 Aster sagittifoslius 40) ( Crystopteris fragilis, 175 Aster salicifolius, 40 Aster sp., 40), 169 ( D Astragalus canadensis, 28 (39) Astragalus carolinianus, see A. can- Datura tatula, 150 adensis Dentaria Iaciniata, 25 Avena sativa, 233 Deringia, see Cryptotaenia https://scholarworks.uni.edu/pias/vol17/iss1/10 30 Wilson: Preliminary List of the Parasitic Fungi of Fayette County, Iowa IOWA ACADEMY OE' SCIENCE 77 Desmodiun grandifiore, 50) Hel ianthus doronicoides, 13, 40, 216 ( Desmodium assilifolium, 45 Helianthus grosseserratus, 216 Diervilla Diervilla, see D. lonicera Helianthus strumosus, 216 Diervilla Lonicera, 92 Helianthus trachelifolius, 216 Digitaria sanguinalis, 156 Heliopsis scabra, 40 Dioscorea villosa, 132 Hepatica acuta, see actaloba H. Dirca palustris, 242 Hepatica acutiloba, 16, 161, 179 Draba caroliniana, 25 Heuchera hispida, 136 Hordeum vulgare, 149, 154 E Humulus lupulus, 111 Hystryx Hystryx, see H. patula Echinocystis lobata, 11, 133 Hystryx patula, 56 Elymus canadensis, 218 Hydrophyllum virginicum, 24, 217 Epilobium coloratum, (35) Erechtites hieracifolia, 36 I Erigeron annuus, 93, 127, 206 Erigeron canadensis, 36, 127, 206 Impatiens aurea, 218 Erigeron philadelphicus, 206 Impatiens bifiora, 14 Erigeron ramosum, 93 Erysiinum parvifiora, 25 J " Erysiphe cichoracearum, 79 Juglans cinerea, 112, 245 Euonymous atropurpureus, ( 43) Juncus interior, 57, 198 Eupatorium ageratoides, see E. urticae- J uniperus virginiana, 186, 1 folium �:. 188 11 Eupatorium purpureum, 13, 212 K Eupatorium urticaefolium, 40 Koellia, see Pycnanthemum Euphorbia corollata, ( 46a) Kuhnia eupatorioides, 219 Euphorbia humistrata, 192 Euphorbia maculata, 23 Euthamnia graminifolia, see Solidago Lactaria sp., 53. Lactuca canadensis, 30, 94, 223 F Lactuca hirsuta, 94 Falcata. see Amphicarpa Lactuca pulchella, 223 Filix, see Cystopteris Lathyrus venosus, 114, 193 Fragaria americana, 62 Laportea canadensis, 108 Fragaria virginica, 62 Lappula virginana, 21 Fraxinus americana, 50, 215 Lepachys pinnata, 13, 163 Fraxinus sp., (50) Lepidium apetalum, 7, 25 Leptandra virginica, See Veronica G Leptilion canadense, · see Erigeron Galium boreale, 19, 110 Lespediza capitata, 58, 195 Galium tinctorium, 232 Linum sulcatum, 171 Gentiana Andrewsii, 7 4 Lonicera Sullivantii, 43, 126 Geranium maculatum, 12, 134, 230 Lonicera tartarica, 43 • Geum canadense, 26 Lycopus rubellus, 71 H M ( 40), Macrocalyx, see Helianthus annuus, 216 Nemophylla Helianthus depapetalis, 216 Malus, see Pyrus Published by UNI ScholarWorks, 1910 31 Proceedings of the Iowa Academy of Science, Vol. 17 [1910], No. 1, Art. 10 78 IOWA ACADEMY OF SCIENCE Masadenia, see Caccalia Polygonum Hydropiper, 139 Malva rotundifolia, 96 Polygon�1m lepathifolium, 157, 158 Meibomia, see Desmodium Polygonum pennsylvanicum, 157 Melampsora Bigelowwi, 82, 153 Polymnia canadensis, 24u Melampsora Medusae, 82, 153 Polystictus, see Coriolus Melilotus alba, 131 Populus deltoides, 172 Menispermium canadensis, 137, 164 Populus tremuloides, 33 Mentha canadensis, 41, 71, 221 Portulaca oleracea, 8 Micrampelis, see Echinocystis Potentilla canadensis, 184 Monarda fistulosa, 4, 221 Potentilla monsepalensis, 26, 68, 121 Muhlen'bergia Schreberi, 222 Prenanthes alba, 101 Muhlenbergia diffusa, see M. Schreberi Prunus americana, 31, 37, 59, 66, 179 Muhlenbergia mexicana, 146 Prunus avium, 37 Musca domestica, 5 Prunus virginiana, 59, 118 Prunus sp., (37) N Psedera quinquefolia, 4 8, 61, 125 61, 125 Nabulus, see Prenanthes Psedera quinquefolia hirsuta, 82 Nemophylla microcalyx, 241 Puccinia Asparagi, 151 Nymph p Quercus alba, 44 Panax quinquefolia, 116 Quercus palustris, 32 Panicum capillare, 213 Quercus rubra, 32, ( 44) Parietaria pennsylvanica, 40, 99 Quercus velutina, 43, 44 Parthenocissus, see psedera Phlox Drummondri, ( 40) R Phlox paniculata, 227 Phryma leptostachya, Radicula 95, 225 Armoracia, 120 Physalis pruniosa, 162 Radicula palustris, 7 17, 39 211 Plantago major, 40 Ranunculus abortivus, , • Plantago Rugelli, 40 Ranunculus recurvatus, 119 Poa pratensis, 42, 214 Ranunculus septentrionalis, 119 Podophyllum, peltatum, 100, 229 Ratbida, see Lepachys Podosphaera Oxycanthae, 79 Rhus glabra, 35 Polemonium reptans, 243 Rhus radicans, see R. xic dendr n To o o 220 107, 143, 178 Polygonatum biflorum, Rhus Toxicodendron, Polygonum amphibium, 230 Ribes cynosbati, (36b), 200 Polygonum aviculare, 39, 117 Ribes floridum, 36b, 200, Polygonum erectum, 39 Ribes gracile, 75, 200 https://scholarworks.uni.edu/pias/vol17/iss1/10 32 Wilson: Preliminary List of the Parasitic Fungi of Fayette County, Iowa IOWA ACADEMY OF SCIENCE Ribes rotundifolium, ( 36b) T Roripa, see Radicula Taraxacum officinale, 123, 236 Rosa blanda (36a) 36, Taraxacum Taraxacum, see T. officina- 141, 182 Rosa pratincola, Iis 102 Rubus occidentalis, Teucrum canadensis, 140 183 Rubus sp., Tilia americana, ( 49a) Rudbeckia laciniata, 77, 122, 197, 240 Trifolium pratense, 145, 147 Trifolium repens, 147, 199 s Triosetum perfoliatum, 148 Sagittaria latifolia, 113, 168 Salix amygdaloides, 170 u Salix fiuvitialis, see S. longifolia Ulmus americana, (43 ) , 49, (50 ) , 76 47, 170 Salix humilis, Uromyces Silphii, 82 170 Salix interior, Urtica gracilis, 170 237 Salix longifolia, Urticastum, see Laport�a 64, 170 Salix lucida, Uvularia grandifiora, 72 Salix sp., ( 4 7) Salomonia, see Polygonatum Sambucus canadensis, ( 44a) v Vagnera, see Smilicana • Sanicula sp., 167 Verbena bracteosa, 40 Scirpus atrovirens, 202 Verbena hastata, 40 Scrophularia marylandica, 27, 103 Verbena stricta, 40 Scutellaria laterifiora, ( 41), 104, Verbena urticIBfolia, 40 • Setaria glauca, 10, 155 Vernonia altissima, Setaria viridis, 10 97 Vernonia maxima, see V. altissima Silene stellata, 105 Veronica virginica, 36 Silphium laciniatum, 198 Viburnum lentago, 43, 144 Silphium perfoliatum, 234 Vicia americana, 2 , 190, Sium cicutIBfolium, 142 9 193 Viola papilionacea, 238 Smilicana racemosa, 106 Viola pubescens, 81, 238 Solidago canadensis, 40), ( 169 Viola scabriuscula, 238 Solidago fiexicaulis, see S. latifolia Viola sp., 78, 135 Solidago gramiµifolia, 65 Vitis cordifolia, ( 48) Solidago latifolia, 207 65, 169, Vitis vulpina, 15, 48, Solidago rigida, 40) 61 ( Vitis sp. ( 48) Solidago serotina, 207 169, Solidago serotina gigantea, ( 40) Solidago ulmifolia, 207 w Sonchus oleraceus, (36) Washingtonia, see usmorhiza Sorghastrum avenaceum, see S. nutaris Sorghastrum nutans, 56 x Spartina cynosuroides, 189, 215 Xanthoxlylum americanum, 50, 244 Stachys palustris, 41 88 • Stieronema ciliatum, Syntherisma, see Digitaria z Zea Mays 235 Syringa vulgaris, 43 , Published by UNI ScholarWorks, 1910 33