Coltricia perennis
Coltricia perennis (L.) Murrill. in Dai, Y.C., Fungal diversity, 45, 131-343 (2010)
Diagnosis: Fruitbody Basidiocarps annual, centrally stipitate, consistently soft leathery and without distinct odour or taste when fresh. Pilei more or less circular, often confluent with a few adjacent ones, up to 5 cm in diam, 2 mm thick at centre. Pileal surface cinnamon or deep brown, becoming greyish with age, distinctly concentrically zonate, velutinate or tomentose; margin thin, sharp, curved down when dry. Pore surface golden brown to rust-brown; pores angular to round, 3–4 per mm; dissepiments thin, entire or slightly lacerate. Context rust-brown, coriaceous, up to 0.5 mm thick. Tubes greyish brown, distinctly paler than context, soft corky to slightly brittle when dry, up to 1.5 mm long. Stipe dark reddish brown, corky, velutinate, up to 2 cm long, 3 mm thick. Hyphal structure Hyphal system monomitic; generative hyphae simple septate; tissue darkening but otherwise unchanged in KOH. Context Contextual hyphae pale yellowish to rust-brown, thin- to fairly thick-walled with a wide lumen, occasionally branched, with a more or less regularly arranged; hyphae at upper surface variably CB+, 5–9 μm in diam; hyphae in stipe rust-brown, fairly thick-walled with a wide lumen, rarely branched, regularly arranged, CB–, 6–10 μm in diam. Tubes Tramal hyphae pale yellowish to yellowish brown, thin- to thick-walled with a large lumen, occasionally branched, loosely parallel along the tubes, more or less CB+, 3.5–5.5 μm in diam. Basidia broadly clavate, with four sterigmata and a simple septum at the base, 16–20× 6.5–8.5 μm; basidioles in shape similar to basidia, but slightly smaller. Spores Basidiospores ellipsoid, pale yellowish, thick-walled, smooth, IKI–, CB+, (6–)6.5–9(–10)×(4–)4.1–5.1(–6) μm, L=7.41 μm, W=4.7 μm, Q=1.49–1.67 (n=90/3).
Index Fungorum Number: IF356793
Notes: Coltricia perennis usually grows on mineral soil in coniferous forests. Sometimes it may be confused with Onnia tomentosa (Fr.) P. Karst., but the latter species has hyaline and thin-walled basidiospores. In addition, Onnia tomentosa has large and dark brown hymenial setae, which make it easy to distinguish it in the microscope.
Figure 1. Basidiocarps of Coltricia perennis
Figure 2. Microscopic structures of Coltricia perennis. a basidiospores; b basidia and basidioles; c hyphae from trama; d hyphae from context
Reference:
Dai, Y.C. (2010). Hymenochaetaceae (Basidiomycota) in China. Fungal diversity, 45, 131-343.
Recent Genus
CystodermaAmylocorticiellum
Restingomyces
Recent Species
Cystoderma amianthinumAmylocorticiellum subillaqueatum
Restingomyces reticulatus