Trechispora fissurata 2021

Trechispora fissurata C.L. Zhao, sp. nov.2021

MycoBank no: MB 838614

Holotype：China, Yunnan Province, Puer, Jingdong County, Wuliangshan National Nature Reserve, on angiosperm trunk, October 6, 2017, CLZhao 4571 (SWFC).

Morphological description

Sexual morph: Undetermined

Asexual morph: 

Basidiomata 

Annual, adnate, without odor or taste when fresh, becoming cracking upon drying, up to 8 cm long and 4.5 cm wide, 400–800μm thick. Hymenial surface hydnoid, with aculei, cylindrical to conical, sharp, 0.5–0.9 mm long, cream to straw yellow when fresh, turn to cream to yellow upon drying. Margin cream to yellow.

Hyphal system

Monomitic, generative hyphae with clamp connections, hyaline, thick-walled, up to 0.8μm, branched, 2.5–5μm in diameter, IKI-,CB-;hyphae unchanged in KOH.

Hymenium 

Cystidia and cystidioles absent; basidia shortly clavate to tubular, with 4-sterigmata and a basal clamp connection, 8–10.5×2.5-4.5μm, basidioles dominant, in shape similar to basidia, but slightly smaller.

Basidiospores 

Ellipsoid, hyaline, thick-walled, ornamented, dense aculei, sharp, IKI-, CB-, (3-)3.3–4(-4.3)×(2.5-)2.8–3.5(-3.9)μm, L =3.67μm,W =3.19μm,Q=1.13–1.17(n=60/2).

Culture characteristics:

Habitat:

Distribution: China

GenBank Accession: ITS MW544026; nLSU MW520176

ITS MW544027; nLSU MW520177

Notes:

Reference: [1] Zhao, W. , &  Zhao, C. L. . (2021). The phylogenetic relationship revealed three new wood-inhabiting fungal species from genus trechispora. Frontiers in Microbiology, 12, 650195.

Basidiomata of Trechispora fissurata (holotype). Bars: (A) 1 cm; (B) 1 mm.

Microscopic structures of Trechispora fissurata (drawn from the holotype). (A) Basidiospores. (B) Basidia and basidioles. (C) Section of hymenium. Bars: (A) 5μm;(B,C) 10μm.