Taxonomy and molecular phylogeny of Trametopsis (Polyporales, Basidiomycota) with descriptions of two new species
Liu, Shun
Sun, Yi-Fei
Wang, Yan
Xu, Tai-Min
Song, Chang-Ge
Chen, Yuan-Yuan
Cui, Bao-Kai
MycoKeys
2022
2022-05-31
90
31
51
01D34EEF-3E37-59BB-972F-259196BA659F
B. K. Cui & Shun Liu
B. K. Cui & Shun Liu
2022
Agaricomycetes
Polyporaceae
Trametopsis
CoL
Fungi
Trametopsis tasmanica
Polyporales
0
31
Basidiomycota
species
tasmanica
sp. nov.
Figs 5 , 6
Diagnosis. Trametopsis tasmanicais distinguished from T. abieticolaby resupinate basidiomata, smaller pores (2-4 per mm) and basidiospores (5.2-6.3 x1.8-2.2 μm), and by growing on Eucalyptussp.
Holotype. Australia. Tasmania, Hobart, Mount Wellington, on rotten wood of Eucalyptussp., 13 May 2018, Cui 16606 (holotype BJFC 029905).
Etymology. Tasmanica(Lat.): referring to the species collected from Tasmania in Australia.
Fruiting body. Basidiomata annual, resupinate, not easily separated from the substrate, without odour or taste when fresh, becoming corky to fragile and light in weight upon drying; up to 5.5 cm long, 2 cm wide, and 7 mm thick at centre. Pore surface cream to pinkish-buff when fresh, becoming honey-yellow to snuff brown upon drying; pores round to angular, 2-4 per mm; dissepiments slightly thick, entire to lacerate. Context very thin, corky, cream to buff, up to 2 mm thick. Tubes concolorous with pore surface, corky, up to 4 mm long. Figure 5. Trametopsis tasmanica(Holotype, Cui 16606 and paratype, Cui 16607). Scale bar: 1 cm.
Hyphal structure. Hyphal system monomitic in context, dimitic in trama; generative hyphae with clamp connections; skeletal hyphae IKI-, CB-; tissues unchanged in KOH.
Context. Generative hyphae hyaline, thin- to slightly thick-walled with a wide lumen, occasionally branched, loosely interwoven, 2.7-4 μmin diam.
Tubes. Generative hyphae frequent, hyaline, thin-walled, occasionally branched, 2-3 μmin diam.; skeletal hyphae dominant, hyaline, thick-walled with a wide to narrow lumen, occasionally branched, more or less straight, interwoven, 2-3.7 μmin diam. Cystidia and cystidioles absent. Basidia clavate, bearing four sterigmata and a basal clamp connection, 16-19.5 x3.7-5 µm; basidioles dominant, similar to basidia but smaller. Figure 6.Microscopic structures of Trametopsis tasmanica(Holotype, Cui 16606) aBasidiospores bBasidia cBasidioles dHyphae from trama eHyphae from context.
Spores. Basidiospores cylindrical, hyaline, thin-walled, smooth, IKI-, CB-, (5-)5.2-6.3 x(1.7-)1.8-2.2(-2.4) μm, L = 5.84 μm, W = 2.02 μm, Q = 2.66-3.13 (n = 60/2).
Type of rot. White rot.
Additional specimen (paratype) examined. Australia. Tasmania, Hobart, Mount Wellington, on rotten branch of Eucalyptussp., 13 May 2018, Cui 16607 (BJFC 029906).