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Heimioporus (Boletineae) in Australia

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Heimioporus (Boletineae) in Australia Australasian Mycologist (2011) 29 Heimioporus (Boletineae) in Australia Roy E. Halling1,3 and Nigel A. Fechner2 1Institute of Systematic Botany, The New York Botanical Garden, Bronx, New York 10458, United States of America. 2Queensland Herbarium, Brisbane Botanic Garden, Mt Coot-tha Road, Toowong, Brisbane, Queensland 4066, Australia. 3Author for correspondence. Email: [email protected]. Abstract Two species of Heimioporus are fully documented, described and illustrated from recent collections gathered in Queensland. While H. fruticicola is known only from Australia so far, the specimens of H. japonicusMYVT-YHZLY0ZSHUKHUK*VVSVVSHYLWYLZLU[HUL^YLWVY[HUKZPNUPÄJHU[YHUNLL_[LUZPVUMVY this bolete. Key words: Boletes, mycorrhizae, Australia, biogeography. Introduction Materials and Methods Heimioporus^HZWYVWVZLKI`/VYHRHZHUL^ General colour terms are approximations, and the colour name to replace the bolete genus Heimiella Boedijn non codes (e.g., 7D8) are page, column, and row designations 3VOTHUU (ZTHU`HZZWLJPLZ^LYLPUJS\KLK from Kornerup & Wanscher (1983). All microscopic observations were made with an Olympus BHS compound I` /VYHR I\[ HZ LU]PZHNLK OLYL [OL NLU\Z microscope equipped with Nomarski differential interference circumscribes 10 species. These have olive-brown contrast (DIC) optics, and measurements were from dried spores which are alveolate-reticulate to reticulate or with TH[LYPHSYL]P]LKPU 26/;OLHIIYL]PH[PVU8YLMLYZ[V[OL pit-like perforations, extremely rarely rugulose and then mean length/width ratio measured from n basidiospores, and with crater–like pits; they are elongate-ellipsoid to short x refers to the mean length × mean width. Scanning electron LSSPWZVPK HUK SHJR H Z\WYHOPSHY WSHNL )VLKPQU micrographs of the spores were captured digitally from a included only the type species of his genus (Boletus Hitachi S-2700 scanning electron microscope operating at retisporus Pat. & C.F. Baker) in the circumscription. The 20 kV. Hymenophoral fragments were removed from dried main feature emphasised by Boedijn was the subovoid, basidiomata, mounted directly on aluminum stubs using carbon adhesive tabs, and coated with 10 nm of gold using reticulated spores. Later, Heim (1963), Hongo (1969, a Hummer II sputter coater. Herbarium acronyms are those *VYULY HUKAHUN KLZJYPILK designated in the online version of Index Herbariorum (Thiers, some new species. Singer et al. (1983) described H. continuously updated). ivoryi from Belize (as a Boletellus), while Watling (2000) and Watling & Hollands (1990) described additional Taxonomy taxa and provided some re-alignment to the genus with Key Macroscopic Features known species (e.g., H. betula, H. fruticicola). During this time, Heimioporus was accepted reluctantly by Corner 1a. Pileus matted subtomentose; (1972; as Heimiella, for the six species known to him) stipe pseudo-reticulate to who noted no clearly demarcated adaxial patch (plage) subpruinose-ridged to subscabrous H. fruticicola compared with Strobilomyces. While that comparison 1b. Pileus subvelutinous; stipe seems an odd one, given that the spores share only a coarsely but shallowly lacerate- reticulate ornamentation, other Boletineae do show an ridged with a dense red pruina adaxial plage area. In contrast, Singer (1986, and earlier overlaying the ridges H. japonicus editions) did not accept segregation from Boletellus and placed all of those reticulate spored taxa into Heimioporus fruticicola (Berk.) E. Horak, Sydowia 56: Boletellus along with others that have smooth and/or ribbed spores. Recently, strict consensus phylogenetic -PNZ(*¶+*¶+ analyses obtained by Osmundson (2009) using three Boletus fruticicola Berk., London J. Bot ! gene loci (nucLSU, atp6, tef1) clearly infer Boletellus and Heimioporus as separate genera. Heimioporus Suillus fruticicola (Berk.) Kuntze, Rev. Gen. Pl. 3(2): fruticicola is the only species of the genus known from Australia so far. On the basis of recent collections, Austroboletus fruticicola (Berk.) E. Horak, Sydowia we can now provide a more detailed description of 33: 76. 1980. H. fruticicola, and a new record of H. japonicus as Heimiella fruticicola (Berk.) Watling & Hollands, occurring in Australia. Notes Roy. Bot. Gard. Edinburgh! 4`JVIHUR!4) © 2011 Australasian Mycological Society Inc. Australasian Mycologist (2011) 29 Fig. 1. Habits of Heimioporus. A Heimioporus fruticicola (Halling 8970) × 1. B Heimioporus japonicus (Halling 9288) × 1. C Stipe surface detail of H. japonicus/HSSPUN í Fig. 2. (next page left) Light micrographs with Nomarski Fig. 3. (next page right) Scanning electron micrographs of DIC of spores of Heimioporus. A H. japonicus (holotype). B spores of Heimioporus. A–B H. japonicus (Halling 9288). C–D H. japonicus (Halling 9288). C H. fruticicola (holotype). D H. H. fruticicola/HSSPUN :JHSLIHYZ$T fruticicola/HSSPUN :JHSLIHYZ$T © 2011 Australasian Mycological Society Inc. Australasian Mycologist (2011) 29 Pileus¶¶¶ JTIYVHKJVU]L_[VWSHUV Habit, habitat, and distribution: solitary to gregarious convex to plane, viscid when wet, soon dry, matted on soil, in the vicinity of Allocasuarina littoralis (Salisb.) subtomentose, red to lake red (10C8, 9C–D8,7), fading L.A.S. Johnson, Eucalyptus camaldulensis Dehnh., [VULHYNYL`PZOYLK)ZVTL^OH[ISV[JO`^P[OHNL" Eucalyptus sp., Acacia sp. (known mycorrhizal ÅLZO pale yellow when young, white with age, not plants), and Hibbertia riparia (R.Br. ex DC.) Hoogland; blueing, or very rarely with a hint of pale blue, with Queensland, Tasmania, Victoria. mild odour and taste. Tubes 10–13 mm deep, adnexed to depressed around the stipe, pale yellow to yellow Material examined: Australia: Tasmania Penguite, becoming greenish yellow, (3A6 to 3E6) or dull yellowish Gunn 1775 (HOLOTYPE: K). Queensland Mareeba, green to olive, not blueing, or only slightly with injury; Davies Creek National Park, Davies Creek Road, pores concolorous, 1–2 per mm, rarely blueing, and 19 Feb 1992, Halling 6837 (*0(9 , 7,9;/" eventually staining pale brown. Stipe ¶ ¶ JT »»»:»»»,T4HYHalling SVUN ¶ ¶ JT IYVHK KY` Z[YHPNO[ VY J\Y]LK 8958)905@"»»»:»»»,T [LYL[L VY ÅH[[LULK LX\HS [V IYVHKS` Z\IJSH]H[L VY Mar 2007, Halling 8970 (BRI, NY); Kuranda, Black tapering downward, usually pinched at the base, white 4V\U[HPU 9VHK RT 5 VM 2\YHUKH »»»: to pale yellow to pale greenish yellow at apex, yellow »»»,T4HYHalling 8962 (BRI, at base, pseudo-reticulate to subpruinose-ridged to NY); Cooloola, Mutyi, 17 Sep 1982, BRIP 9148 (BRI); 17 Z\IZJHIYV\Z ^P[O ZJHIYVZP[` JVUÄULK [V [OL YPKNLZ" Sep 1982, BRIP 9150 (BRI); near Rainbow Beach, 17 these red or pink on pale yellow to yellow ground Sep 1982, BRIP 9149 (BRI); Cooloola National Park, on colour; interior solid, pale yellow to yellowish white, -PN;YLL7VPU[[YHJR(WYPS SLNC. Sandercoe & unchanging; basal mycelium white. J. Milne (JECA 86/66=BRIP 19814) det. R. Watling (BRI). Victoria: Grampians. Victoria Range, Cultivation Creek, Basidiospores ¶ í ¶ T n = 16; x = ULHY)\HUKPR*HTWPUN.YV\UK¢»:¢», í T" Q = 1.96), subfusoid to ellipsoid, Nov 1992, May 816 (MEL 2030279). rugulose with crater-like pits, inamyloid (rarely lightly dextrinoid), honey brown in KOH. Basidia ¶í¶ Commentary! ;OPZ ZWLJPLZ ^HZ ÄYZ[ KLZJYPILK I` T JSH]H[L Z[LYPNTH[L O`HSPUL Hymenophoral )LYRLSL`IHZLKVUHJVSSLJ[PVUMYVT;HZTHUPH trama bilateral, of the BoletusZ\I[`WL^P[OJLSSZ¶ The locality was published as ‘Penguite’ but this T IYVHK O`HSPUL ÅLL[PUNS` HT`SVPK PU 4LSaLY»Z is clearly a typographical error for ‘Penquite’ near PleurocystidiaYHYL\W[VTSVUNM\ZVPK]LU[YPJVZL Launceston, where the collector R.C. Gunn lived and hyaline, thin-walled. Cheilocystidia Z\IJSH]H[L ¶ worked for some time. Horak (1980) examined the T SVUN O`HSPUL [OPU^HSSLK Pileipellis a collapsed type specimen, provided some modern details on [YPJOVKLYTP\T^P[OJLSSZ¶TIYVHKJ`SPUKYPJHS microscopic features, and transferred the species to to narrowly clavate-subcapitate, smooth, thin-walled, Austroboletus. Our examination shows that the spores inamyloid, hyaline or with golden yellow content in HYLÄULS`HUKPYYLN\SHYS`Y\N\SVZL^P[OVJJHZPVUHSHUK KOH, with an amorphous, soluble, reddish brown, scattered, shallowly cratered pits; the rugulosity is plasmatic pigment. Stipitipellis hyphae hyaline, continuous over the apex (Fig. 3C–D). In optical section smooth, thin-walled, with caulocystidia¶í¶ ^P[OIYPNO[ÄLSKVW[PJZ[OLZWVYLZHWWLHY[VOH]LWLN T Z\IJSH]H[L [V JSH]H[L VY ZOVY[JSH]H[L [V VISVUN like warts and have been described as Ganoderma-like or subrectangular. Clamp connections absent (sparse, (Watling & Gregory, 1986) (Fig. 2C). Watling & Gregory ÄKL>H[SPUN .YLNVY` (1986) had examined material from the Cooloola portion © 2011 Australasian Mycological Society Inc. Australasian Mycologist (2011) 29 Fig. 4. Microscopic features of Heimioporus fruticicola Fig 5. Microscopic features of Heimioporus japonicus (Halling 8970). A Pileipellis elements. B Pleurocystidia. C (Halling 9288). A Pileipellis elements. B Caulocystidia. C Caulocystidia. D*OLPSVJ`Z[PKPH:JHSLIHY$T *OLPSVJ`Z[PKPH:JHSLIHY$T of the Great Sandy National Park, which extended Pileus ¶ JT IYVHK WSHUVJVU]L_ KY` ÄULS` the range beyond the type locality in Tasmania. They subvelutinous, deep red to pale red, with some hints were able to provide only some sparse details from the of olive at margin from fading; ÅLZO pale yellow, ÄLSKKH[HSVKNLK^P[O[OVZLZWLJPTLUZI\[ZWLJPÄJZ unchanging, with mild odour and taste. Tubes adnexed, outlining the macromorphology were still lacking. Until bright yellow to yellow with a hint of pale greenish, now, a habit image has not
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