Auriculariales » Auriculariaceae » Auricularia

Auricularia asiatica

Auricularia asiatica Bandara & K.D. Hyde

Index Fungorum Number. IF 552349, Facesoffungi number. FoF 02494.

Basidiocarp 3–6 cm, imbricate, sessile, crenate margin; abhymenial surface brownish orange, 5C5, dark brown, 6F7 bands; hymenial surface dark brown, 7F4, pruinose, thick ridges present. Internal features: thickness 1440–1950 μm when dry; medulla absent; abhymenial hairs densely arranged, fasciculated, clustered, pigmented, yellow-brown, blunt or pointed tip, thick-walled, wall thickness 0.6–0.9 μm, narrow lumen, hair 2.6–2.7 μm wide; clamp connections present; zona pilosa 460–900 μm; zona compacta 20–35 μm; zona subcompacta superioris 30–85 μm; zona intermedia 640–900 μm; zona subcompacta inferioris 45–135 μm; hymenium 80–135 μm; basidia 40–55 × 2.8–3.8 μm, cylindrical, blunt or tapered ends, sterigmata observed; basidiospores smooth-walled, allantoid, hyaline, (9.2)10.2–12.0(14.1) × (4.8)5.1–6(7.2) μm, ± SD = 11.1 ± 1.5 × 5.6 ± 0.7 μm, Q = 1.6–2.6, with large irregularly shaped guttules.

 

Etymology: The species epithet refers to the geographical region (Asia) where the fungus was collected.

Material examined: THAILAND, Chachoensao: Khao Ang Ru Nai Wildlife Reserve, old planted area, 17 October 1995, RJ Bandoni and TW Flegel 11.606 (BBH 895, holotype). THAILAND, Chiang Mai: Mae Rim, Ban Kong Hae, on wood, 15 February 1979, K Høidand 5–79 (O300862); THAILAND, Prachuap Khiri Khan: Thap Sakae, Huai Yang, on decaying branch, 29 July 2015, AR Bandara ST05 (MFLU 162103); THAILAND, Samut Songkhram: September 1986, RJ Bandoni 7753 (BBH1).

Fig. 1 Auricularia asiatica (BBH 895). a. Basidiocarp. b. Cross-section. c. Abhymenial hairs. d. Basidia. e. Close-up of hymenial layer. f–l. Basidiospores. m. Clamp connection of hyphae. Scale bars: a=mm, b=500 μm, c=250 μm, d=100, e=25 μm, f–m=5 μm.

 

 

 

Reference

Bandara A. R., Karunarathna S. C., Phillips A. J., Mortimer P. E., Xu J. C., Kakumyan P., & Hyde K. D. 2017–Diversity of Auricularia (Auriculariaceae, Auriculariales) in Thailand. Phytotax, 292(1), 19-34.

 

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