Junghuhnia nandinae F. Wu, P. Du & X.M. Tian, sp. nov. 2020
MycoBank No: 833784
Holotype: China, Chongqing, Nanchuan County, Jinfoshan Forest Park, on dead tree of Nandina domestica, 1.XI.2019 Dai 21107 (holotype in BJFC, isotype in IFP) and Dai 21108 (paratype in BJFC).
Morphological description
Basidiomata. Annual, resupinate, coriaceous, without odour or taste when fresh, hard corky when dried, 30 cm length, 3 cm width and 1 mm thick. Pore surface fleshpink when fresh, pink to salmon when dried; margin distinct, white and nearly 3 mm width; pores round to angular, 6–8 per mm; dissepiments thin, entire. Subiculum buff, paler than tubes, corky when dried, nearly 0.5 mm thick. Tubes concolorous with pore surface, corky, nearly 0.5 mm length.
Hyphal system. Hyphal system dimitic; generative hyphae with clamp connections, skeletal hyphae IKI–, CB+; tissue unchanged in KOH.
Subiculum. Dominated by skeletal hyphae; generative hyphae hyaline, thinwalled, unbranched, 2–3 µm in diam.; skeletal hyphae thick-walled to subsolid, flexuous, unbranched, gelatinised, interwoven, 2.5–4 µm in diam.
Tubes. Trama dominated by skeletal hyphae; generative hyphae hyaline, thinwalled, rarely branched, 2–3 µm in diam.; skeletal hyphae thick-walled to subsolid, unbranched, flexuous, more or less gelatinised, interwoven, 2.5–3.5 µm in diam. Skeletocystidia clavate, thick-walled, originated from trama, apex covered with crystals, embedded amongst trama and dissepiments or projecting into hymenium, 22–45 × 6–8 µm. Basidia clavate, bearing four sterigmata and a basal clamp connection, 8–11 × 4–4.6 µm; basidioles in shape similar to basidia, but smaller.
Spores. Basidiospores ellipsoid, hyaline, thin-walled, smooth, IKI–, CB–, (2.5–)2.6– 3.2(–3.3) × (1.6–)1.8–2(–2.1) µm, L = 2.97 µm, W = 1.92 µm, Q = 1.54 (n = 60/2).
Habitat: on dead tree of Nandina domestica.
Distribution: China
GenBank Accession: ITS MN833677, MN833678; nLSU MN833679, MN833680
Notes:
Reference: Du P, Wu F, Tian X-M (2020) Three new species of Junghuhnia (Polyporales, Basidiomycota) from China.
Basidiomata of Junghuhnia nandinae (holotype Dai 21107). Scale bar: 8 cm.
