Auricularia delicata

Basidiocarp: 5.2 cm, attached to substrate from corner or centre, slimy and thick, dark crenate margin; abhymenial surface greyish yellow (pinkish), 4B3 to violet brown, 10F7; hymenial surface greyish orange, 5B3 to violet brown, 10F6, reticulated.

 Internal features: thickness 1160–1290 μm; medulla present; abhymenial hairs densely arranged, hyaline, blunt or pointed tip, thick-walled, wall thickness 2.2–2.4 μm, clear lumen, septa observed, hair bases 6–10 μm wide; clamp connections present; zona pilosa 98–157 μm; zona compacta 21–32 μm; zona subcompacta superioris 55–65 μm; zona laxa superioris 345–395 μm; medulla 200–330 μm; zona laxa inferioris 90–235 μm; zona subcompacta inferioris 90–105 μm; hymenium 65–105 μm; basidia 38–56 × 4–5.5 μm, cylindrical, blunt or tapered ends, sterigmata observed; basidiospores smooth-walled, allantoid, hyaline, (11.5)12.3–13(14) × (5)5.7–6.2(6.7) μm, ± SD = 12.6 ± 0.7 × 5.9 ± 0.5 μm, Q = 1.8–2.5, with irregularly shaped guttules. (Fig. 1)

Facesoffungi number: FoF 02496.

Material examined: THAILAND, Chiang Mai: Chiang Dao, Doi Chiang Dao, on wood, 20 February 1979, T Schumacher (O300854, O300857, O300860); THAILAND, Chiang Mai: Chiang Dao, Doi Chiang Dao, on wood, 22 February 1979, K Høiland 25-79 (O300855); THAILAND, Chiang Mai: Chiang Dao, Doi Chiang Dao, on trunk of tree, 14 December 1978, T Schumacher 149/78 (O300856); THAILAND, Chiang Mai: Mae On, Huai Kaeo, on dead wood, 15 August 2015, AR Bandara DSK8 (MFLU162117); THAILAND, Chiang Mai: Mae On, Huai Kaeo, on dead wood, 14 August 2015, AR Bandara DSK3 (MFLU162118); THAILAND, Chiang Mai: Mae Taeng, Pa Pae, on dead trunks, 30 July 2014, AR Bandara MRC4 (MFLU162111); THAILAND, Chiang Mai: Mae Taeng, Pa Pae, on dead trunks, 30 July 2014, AR Bandara MRC7 (MFLU162112); THAILAND, Chiang Mai: Mae Taeng, Pa Pae, on dead trunks, 1 August 2014, AR Bandara MRC10 (MFLU162113); THAILAND, Chiang Mai: Mae Taeng, Pa Pae, on dead trunks, 1 August 2014, AR Bandara MRC11 (MFLU162114); THAILAND, Chiang Mai: Mae Taeng, Pa Pae, on dead trunks, 1 August 2014, AR Bandara MRC12 (MFLU162115); THAILAND, Chiang Mai: Mae Taeng, Pa Pae, on dead trunks, 1 August 2014, AR Bandara MRC14 (MFLU162116); THAILAND, Chiang Rai: Mae Fah Luang, Doi Mae Salong, on dead wood, June 2015, B Pechrak AB104 (MFLU162119); THAILAND, Chiang Rai: Mae Fah Luang, Doi Thung, on decaying trunk, 17 June 2014, AR Bandara AB57 (MFLU162120).