Auricularia villosula

Auricularia villosula Malysheva

Index Fungorm number: xxx; Facesoffungi number: FoF 02497.

Basidiocarp: 1–4 cm, substipitate to sessile, cupulate to auriculiform, undulate margin. yellow-brown, abhymenial surface very short hairs, not dense.

Internal features: thickness 485–580 μm; medulla absent; very short abhymenial hairs loosely arranged, hyaline, blunt tip, thick walled, wall thickness 2.2–4.1 μm, narrow lumen, hair bases 4–8 μm wide, hair bases pigmented, light brown, plasmatic; clamp connections present; zona pilosa ≤50 μm; zona compacta 9–18 μm; zona subcompacta superioris 13–33 μm; zona intermedia 280–420 μm; zona subcompacta inferioris 20–60 μm; hymenium 60–85 μm; basidia 50–57 × 7.4–7.6 μm, cylindrical, blunt or tapered ends, sterigmata observed; basidiospores smooth walled, allantoid, hyaline, (11.5)15.2– 18.5(19.5) × (6.1)6.7–8.1(9.4) μm, ± SD = 16.9 ± 2.3 × 7.4 ± 1.0 μm, Q = 1.9–2.6, with irregularly shaped guttules. (Fig.1)

Material examined: THAILAND, Chiang Rai: Mae Fah Luang, Doi Mae Salong, on dead branch, 30 July 2013, AR Bandara AB38 (MFLU162126); THAILAND, Chiang Rai: Mae Fah Luang, Doi Mae Salong, on dead wood, 27 June 2014, AR Bandara AB115B (MFLU162127); THAILAND, Chiang Rai: Mae Fah Luang, Doi Mae Salong, on dead wood, 15 August 2014, AR Bandara AB115D (MFLU162128).