XI.Alg of the English Lake District
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JOURNAL OF THE ROYAL MICROSCOPICAL SOCIETY, DECEMBER 1892. TRANSACTIONS OF THE SOCIETY. XI.-Alga of the English Lake District. By WM. WEST, F.L.S. (Read 16th Nouember, 1892.) PLATESIX. AND X. SEVERALvaluable papers have already appeared in this Journal relating to this subject; there was one by Mr. Bissett in 1184, and since that, two by Mr. A. W. Bennett in 1886 and 1888. As I have practically made collections yearly since 1879 from numerous localities, I am enabled to offer the following contribution to the already large EXPLANATION OF PLATES. (Explicatio iconurn.) a, a', a" = front view (a fronte visa). b, b' = vertical view (a vertice visa). C = side view (a latere visa). d = basal view of aemicell (a basi visa). PLATEIX. Fig. 1.-Closterium abrupturn sp. n. x 520. ,, 2. ,, turgidtun Ehrnb. var. decoraturn vw. n. Cell membrane x 830. ,, 3.--Sphsrorosrna vertebraturn (BrLb.) Ralfs formit minor West. x 520. ,, 4.-Spondylosiurn pyqrnamrn (Cooke) West var. compFessum var. n. x 400. ,, 5.-Micrasterias denticulutu Ureb. vw. subnotatn var. n. x 220. ,~6.-Euastrum Finale (Turp.) Ralfs vai-. retusum var. n. x 520. ,, 7.-Peniurn sp. x 520. ,, 8.-Co~rnariurn obcuizocttum West forma. x 520. ,, 9.-Ermstmm eleguns (Breb.) Kdtz. var. ornutum var. n. x 520. ,, lO.-Cosmariurn morsum sp. n. x 520. I, 11. ,, coarctatum sp. n. x 528. 1, 12. ,, Holrniense Lund. var. integrum Lund forma. x 400. ,, 13.-Closterium oblusum Breb. forma. x 520. ,, 14.-Gosrnariuwa MenegkdrLi Br6b. forma (c. zygosp.). x 520. ,, 15. ,, obliquum Nordst. forma minimu. x 520. 9, 16. ,, pseudarctoum Nordst. x 520. ,, 17.-Ezzastrarn erosurn Lulid. var. notabile var. n. x 520. ,, 18.-Cosrnariurn su7)punctuZaturnNordst. var. Boerqesenii West forma. x 520. ,, 19. ,, cyclicurn Lund. var. nngulatum West. x 520. 9, 20. ,, RegneZlii Wille forms. x 520. Y7 21. ,, pseudutlanthoideum sp. n. x 520. ,, 22. ,I subcylindricurn sp. n. x 520. 1892. 3C 714 Tralzsactioias of the Society. number of species on record. No species is here recorded for any locality in which it has been found previously; but almost every species recorded in the paper of Mr. Bissett and those by Mr. Bennett has been again seen from the same locaiities. The gatherings covered most of the Lake District proper, and Mr. W. H. Youdale kindly made a fern gatherings for me from near Cockermouth, Embleton, Crummock Water, and Bassenthwaite Water. There are 589 species and 78 varieties in this paper, one genus, 21 species, and 23 varieties of which are here described for the first time, and in addition to the latter, there are 27 species and 10 varieties recorded as new to the British Isles (prefixed by an asterisk). In the preparation of this paper-as in former papers-I have again to acknowledge the invaluable help of my son, G. S. West (National Scholar in Biology), who also assisted in making the collections from near Bomness. The locality " Bowness " includes pools near there with Nymp7ma alba and Utriczclaria, small pools with the latter on Brant Fell, and other suitable places as far as Lindeth where many gatherings were made. Fig. 23.-Cosmarizr,m cymatonofophorum sp. n. a, X 530 ; a', a", b, et c x 520. ,, 24. ,, suprcispeciosuin Wdle vnr. emarqinatum vm. n. x 520. ,, 25.--Sta?~rastrum arcuatum Nordut. subsp. subanicula subsp. n. x 520. ,, 26. ,, Brdissonzi Arch. vnr. brevispinum vnr. n. x 400. ,, 27.-Arthroclesmus qlaucescens Wittr. forma conwexu West (c. zygosp.). x 520. ,, 2X.-Stcmrasfrum ellipticlcm sp. 11. x 400. ,, 29.-Cosrncirium subcapitulum sp. 11. x 520. )) 30. ,, Clqxydm Nortlst. x 520. ,, 31.- Cosmarium ochthod~sNordst. var. amffibumvnr. n. Verruca x 530. ,, 32. ,, mzerovphhcturn Nordst. x 520. ,, 33. ,, zlexafum sp. n. x 520. ,, 31.--Sfaurastrum aezcostatzcm Bre'b. subsp. producturn subsp. n. x 520. ,) 35. ,, polyinorphum BrBb. Tar. munituin var. n. x 520. ,, 36. ,, grcicile Hnlfs var. eoronulatum Boldt. f. 3-gona. x 520. ,, 37. ,, Pseudosebaldi Wille var. simp7icior var. n. x 520. ,, 38. ,, vestituin Ralfs var. semivestdurn var. n. x 520. ,, 39.-Dimorphococcus lunatus A. Br. x 520. PLATEX. ,, 40-42.-Cylindrocapsa conferta sp. 11. x 520. ,, 43-46.-Tetracoccus botryoidas gen. ct sp. n. x 520. ,, 4748.- 3, 7 ,, Two groups of four cells. x 830. ,, 4D.-Nephrocytium lunafum sp. n. X 520. ,, 50 -Selenastrum obesicrn sp. n. x 520. I, 51. I, ,, ,, Two separate cells. x 830. 71 52. ,, ,, x 520. ,, 53 -Tetra&dron gigae (Wittr ) Hansg. var. mamillah var. 11. x 520. ,, 54.-Trochiscia uncinata sp. n. x 520. ,, 55 -Chlorococcum regulnre sp. n. X 520. ,, 56.-Oocystis elliptica sp n. x 520. ,, 57.-Schizoeh7amys delicatula sp. n. x 520. ,, 58.--Lyngbya subtile sp. n. x 530. ,, 59 & 60.-Chroococcus giganteus sp. n. X 520. ,, 61-03. ,, schizodermaticus sp. n. x 520. ,, 64.-Cffilnsfrum sphariciirn NLg. x 520. Alp?of the Elzglish Lake District. By Wqn. West. 715 The following contractions are used :-B. for Brother's Water ; Bn. for Bowness; Bo. for Borrowdale; Bt. for Blea Tarn, West- moreland; C. for Bogs around Cockley Beck (Lancashire); H. for Helvellyn; Hk. for pool, Hawkshead to Yewdale; Hp. for Harrop Tarn: L. for Loughrigg; R. for Rydal Fell; S. for Scandale; SIT.for near Skickle Tarn ; W. €or Wastdale and Wast Water. ALGAZ. Class FLORIDEB. Order HELNINTHOOLADII. Genus Batracliospermwn Roth. B, 1mo~2iformeRoth, Threlkeld. Order LENANEACEB. Genus Lemamea Bory. 5.JEuviatiZis Ag. H., Foot of Bow Fell, near Angle Tarn, L, torulosa (Roth.) Ag. S. Class CONFERVOIDEBHETEROGANB. Order COLEOCHBTACEB. Genus Qoleochzde BrAb. 0. scutata BrBb. B., R., Crummock Water. Order ~~DOGONIACEB. Genus Bulhckte Ag. ; PringsB ? B. setigeru (Roth.) Ag. (sterile). Bn., S., B., Bassenthwaite Water, Grisedale Tarn." B. yectamgulavis Wittr. L. Genus G9clogoleium Link ; Pringsh. CE. cryptoporurn Wittr. Blea Tarn in Borrowdale. var. udgare Wittr. Forma cellulis longioribus. Bn. CF. Itzigsohnii De Bary. Hp. a. unddatum (BrBb.). A., Br., S. CE. calcareum Clew. Bzl. Class CONFERVOIDEBISOGAMB. Order CONFERVAGEB. Genus Corzferva (Linn.) Link ; Wille. "C. Wittrockii Wille. Lat. fil. 12-13 p. Bo., Hawkshead. "6.Raciborskii Gutw. Bassenthwaite Water. 3c:: 716 Transactions of the Society. C. bombycina Ag. forma genuina Wille. Bn., H., Deep Dale, Angle Tarn. forma minor Wille. Common. C. Jloccosa (Vauch.) Ag. B., H., Crummock Water. Genus Cladophora Eiitz. C. crisyata (Roth) Kiitz. Embleton. Genus Chatophora Schrank. C. elegans (Roth) Ag. R. Genus Draparnaldia Bory. D. gzomerata (Vauch.) Ag. Bn., Crummock Water. D. plumosa Ag. Buttermere. Genus Xtigeocloniurn Kiitz. 8.fastigiatum (Ralfs) Kiitz. Crummock Water. Genus Microthamnion Niig. M. uezator Cooke. Hk. Genus Aphaltochzte A. Br. A. gZobosa (Nord.) Wolle. forma minor Nord. Diam. cell 10-11 p. Bn., Hp., R., Sk. Order ULOTRICHACEB. Genus Ulothriz Eiitz. U. parietina Eiitz. Sk. U. tenerrima Kctz. Langdale. Genus Schizogonium Kutz. S. murale Eiitz. H. Genus Hornaiscia Aresch. H. moniliformis (Kutz.) Rabh. S. H. zonata (Web. and M.) Aresch. B., Crummock Water. forma major. Lat. cell. 47-50 p. H. H. qualis (Kiitz.) Rabh. var. catenteformis (Kiitz.) Near Cockermouth. Class CONJUGATEB. Order MESOUARPEE. Genus Mougeotia (Ag.) Wittr. M. nummdoides Hass. Scarf Gap Pass, Kirk Fell. N.recwrvus (Bass.) De Toni. Bo., Bassenthwaite Water. Algz of the English Lake District. By Wm. West. 717 ill. parvula Bass. forma sporis rotundo-ellipticis. Long. spor. 15-16 p; lat. spor. 12.5-14 p; Bassen- thwaite Water. M. padrangdata Hass. [M. quadrata (Hass.) Wittr.1 forma minor. Crass. cell. veget. 7-7 5 p ; diam. spor. 28-30 p. Bassen- thwaite Water. M. viride (Kiitz.) Wittr. Bn. M. gracillima (Hass.) Wittr. B., H. (at 2400 ft.). ? M. elegam%du Wittr. Crass. cell. veget. 5 p (sterile). Bn. All the species of Mougeotia were in abundant conjugation except the last. Order ZPGNENACEB. Genus Sirogonizcm Kiitz. 8.sticticum (Eng. Bot.) Kiitz. H. Genus Xpirogyra Link. S. tenzcissima (Haw.) Kiitz. Forma cellulis fructiferis subtumidis. Lat. cell. fruct. 27-30 p; long. zygosp. 60-64 p; lat. zygosp. 23-25 p. Bn. This approaches var. pbna Lagerh. (Contrib. F1. Alg. del Ecuador, p. 7). S. fEuvescens (Hass.) Kutz. forma. Lat. cell. veg. 14-16 p ; long. zygosp. 53-55 p ; lat. zygosp. 22-28 p. Esthwaite Water. 8.gracilis (Hass.) Kutz. Forma zygosporis solum diametro It-plo longioribus. Lat. cell. veg. 19 p; lat. cell. fruct. 39-41 p ; long. zygosp. 42-44 p ; lat. zygosp. 27-30 p. Bn. S. varians (Hass.) Kiitz. Black Sail Pass. Forma cellulis sterilibus minoribus et zygosporis diametro l&-plo longiori bus. Lat. cell. ster. 21 p; long. zygosp. 34 p; lat. zygosp. 25 p., KO. *S. Lutetzana P. Petit var. MINOR var. n. Tar. duplo minor quam forma typica, eellulie vegetativis diametro 8-plo longioribus ; zygosporis cylindrico-oblongis, diametro 3-4-plo longioribus. Lat. cell. veget. 19 p; long. zygosp. 50-63 p; lat. zygosp. 18-19 p. Bo. S. nitida (Dillw.) Link. Bn. Only occasional sygospores. 718 Transactions of the Society. Genus Zygnema Ag. Many sterile species, from various localities, were seen, but none were observed in conjugation. Genus Debarya Wittr. D. glyptosperma (De Bary) Wittr. R. Order DES~KIDIACEAL Genus Gonatozygon De Bary. G. Ealfsii De Bary. L,, B., R., C., Brandreth. G. Brebissonii De Bary. L., B., R., S,, Brandreth, G. minuturn West. Bn., Stye Head Tarn, "G. Kjellmani Wille. Forma minor et recta. Long, 58 p ; lat, 6-6 * 5 p. Bo. Genus Sphzrozosma Corda, 8. vertebraturn (BrBb.) Ralfs. B., R., Bassenthwaite Water, forma minor West (Addit. to the Freshw. Alg. of W. Yorks. in Naturalist, 1891, p. 244). Fig. 3. Hp.; Sk., B.. R. 8. exenvaturn Balfs. Frequent. S, granulatuni Roy et Biss. Bn., W. Genus 8po.nclyZosizcrn BrBb, 8.pulelwlluni Arch. Hp., Grisedale Tarn. S. pygrnmm (Cooke) West (Contrib. Fr. Wat. Alg. of W. Ireland, p. 116). var. WIUPRESSUM var. n. Fig. 4. Var. cellulis subquadrangularibus, compressis ad polos, Long.