Hymenochaetales » Hymenochaetaceae » Coltriciella

Coltriciella dependens

Coltriciella dependens (Berk. & M.A. Curtis) Murrill 1904, in Dai, Y.C., Fungal diversity, 45, 131-343 (2010)

Diagnosis: Fruitbody Basidiocarps annual, stipitate and pendent, solitary or in groups, soft and without odour or taste when fresh, becoming light-weight and fragile to soft corky when dry. Pilei flabelliform to circular, up to 1 cm in diam, 0.8 mm thick at centre. Pileal surface brown to rust-brown, azonate, glossy; margin thin, slightly incised. Pore surface rust-brown; pores angular, 2–3 per mm; dissepiments thin, entire. Context brown, coriaceous, up to 0.3 mm thick. Tubes yellowish brown, soft corky, up to 0.5 mm long. Stipe yellowish brown, corky, finely velutinate to smooth, up to 1.5 cm long, 0.5 mm thick at base. Hyphal structure Hyphal system monomitic; generative hyphae simple septate; tissue darkening but otherwise unchanged in KOH. Context Contextual hyphae yellowish to rust-brown, fairly thick-walled with a large lumen, frequently branched and simple septate, straight, regularly arranged, 4–7 μm in diam. Tubes Tramal hyphae pale yellowish to yellowish brown, thin- to fairly thick-walled, frequently branched and simple septate, sometimes collapsed, parallel along the tubes, 3.5– 6.5 μm in diam. Basidia clavate, thin-walled, with four sterigmata and a basal simple septum, 16–24×6–8.3 μm; basidioles in shape similar to basidia, but slightly smaller. Spores Basidiospores ellipsoid, golden yellowish to brown, thick-walled, finely verrucose, IKI–, CB–, (5–)6–9(–9.6)×(3.8–)4–5.5(–6) μm, L=7.43 μm, W=4.78 μm, Q=1.45– 1.75 (n=89/3)

Index Fungorum Number: IF445568

Notes: Polyporus subperennis Z.G. Yang & Z.S. Bi was described from subtropical China by Bi et al. (1982). Its type material was examined, and it turned out to be a specimen of Coltriciella dependens although its basidiospores are smaller (5.5–7.5×4–5 μm, Dai & Yuan 2007).

Figure 1. Basidiocarps of Coltriciella dependens

 

Figure 2.  Microscopic structures of Coltriciella dependens. a basidiospores; b hyphae from trama; c hyphae from context

 

References:

Bi, Z.S., & Zheng, G.Y., & Lu, D.J. (1982). Basidiomycetes from Dinghu Mountain of China 1. Some species of Polyporaceae. Acta mycologica Sinica, 1, 72–78.

Dai, Y.C. (2010). Hymenochaetaceae (Basidiomycota) in China. Fungal diversity, 45, 131-343.

Dai, Y.C., & Zhang, X.Q., & Zhou, T.X. (2001). New and noteworthy species of Hymenochaetaceae from China. Mycosystema, 20, 16–21.

 

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