Trullella conifericola2021

Trullella conifericola T. Cao & H.S. Yuan, sp. nov.2021

MycoBank: 836287

Holotype: Vietnam. Lam dong Province, Lac Duong District, Lac Duong Dis trict, Bidoup Nui Ba National Park, on fallen branch of Pinus kesiya, 15.X.2017, Yuan 12655 (holotype IFP 019372).

Description

Sexual morph:Basidiocarps annual, sessile or laterally stipitate, solitary to imbri cate, without special odor or taste, leathery when fresh, shrinking, hard corky andlight in weight upon drying. Pileus flabelliform to semi-circular, applanate, projecting 4–10 cm and 1 cm thick at the base; pileal surface hirtellous, with appressed coarse hair, concentrically zonate and sulcate, alternating white and greyish orange  when fresh, yellowish white and nearly azonate when dry; mar gin acute, drying involute and wavy. Pore surface light orange, shiny; pores round to angular, tiny, 10–12 per mm, hardly visible to the naked eye; dissepiments entire; sterile margin ca. 1 mm wide. Context color paler than pores and upper surface, yellow ish white , soft corky, azonate, 0.5–1.5 mm thick. Tubes non-stratified, con colorous with pore surface, dense, ca. 1.5 mm thick when dry. Stipe round, glabrous and smooth, light yellow to greyish yellow , 0.5–2 cm long and 2–4 mm in diam, dense and homogenous. Tubes. Dominated by skeletal hyphae, interwoven; generative hyphae hyaline, thin- to slightly thick-walled, moderately branched, 2–4 μm diam; skeletal hyphae hyaline, thick-walled to semisolid, straight to flexuous, unbranched, 1.5–3.5 μm diam. Cystidia or other sterile hymenial elements absent. Basidia short 8–15 × 4–5.5 μm, clavate, 4-sterigmata of 0.5–1 μm in length, with a clamp connection at base; basidi oles similar to basidia in shape, but slightly smaller. Basidiospores. Cylindrical to allantoid, slightly curved, hyaline, thin-walled, smooth, CB–, IKI–, (4.0–)4.1–5.5(–5.8) × (1.6–)1.8–2.3(–2.5) μm, Lm = 4.94 μm, Wm = 2.09 μm, Q = 2.36–2.45 (n = 60/2).

Asexual morph: Undetermined

Hyphal structure: Hyphal system dimitic: generative hyphae bearing clamp con nections, skeletal hyphae CB+, IKI–; tissues unchanged in KOH.

Culture: Undetermined

Habitat: Undetermined

Distribution: In high altitude area of subtropical to tropical zones.

GenBank accessions: ITS MT269764 

Notes：Undetermined

Referenc: [1] Cao, T. ,  Yu, J. R. ,  Nguyn, T. T. T. , &  Yuan, H. S. . (2021). Multiple-marker phylogeny and morphological evidence reveal two new species in steccherinaceae (polyporales, basidiomycota) from asia. MycoKeys, 78, 169-186.

Basidiocarps of Trullella conifericola (IFP 019372, holotype). Scale bar: 10 mm.

a basidiospores b ba sidia and basidioles c hyphae from trama d hyphae from context.