Daedaleopsis confragosa
Daedaleopsis confragosa (Bolton) J. Schröt. 1888, in Cui, et al., Fungal Diversity 97, 137–392 (2019)
Diagnosis: Basidiocarps annual, pileate, occasionally effused-reflexed, usually imbricate, soft corky to leathery, without odor or taste when fresh, hard corky and light in weight upon drying. Pilei applanate, flabelliform, conchoidal or semicircular, projecting up to 7 cm, 16 cm wide and 2.5 cm thick at base. Pileal surface pale yellow to pale brown to brown, velutinate when juvenile, turning to glabrous with age, concentrically zonate, with radial longitudinal stripe, sometimes slightly warted in old specimens; margin acute. Pore surface cream to pale yellowish brown when fresh, turning to pale brown to pale dark brown when dry; pores variable, round to elongated, daedaleoid or lamellate, about 1 per mm; dissepiments thin, entire to lacerate. Sterile margin narrow, cream, up to 0.5 mm wide. Context yellowish brown, corky, azonate, up to 15 mm thick. Tubes concolorous with context, slightly paler than pore surface, corky, up to 10 mm long. Hyphal system trimitic; generative hyphae bearing clamp connections; skeletal and binding hyphae IKI–, weakly CB+; tissues darkening in KOH. Generative hyphae infrequent, hyaline, thin-walled, branched, 2.5–3.5 µm in diam; skeletal hyphae dominant, pale yellowish-brown, thick-walled to subsolid, frequently branched, interwoven, 3–5 µm in diam; binding hyphae pale yellowish-brown, thick-walled to almost solid, branched, interwoven, 2–3.2 µm in diam. Tubes. — Generative hyphae infrequent, hyaline, thin-walled, rarely branched, 2–2.5 µm in diam; skeletal hyphae dominant, yellowish-brown to golden yellowish, thick-walled to subsolid, frequently branched, interwoven, 2.5–3.4 µm in diam; binding hyphae yellowish-brown to golden yellowish, flexuous, thick-walled to almost solid, branched, 2–2.8 µm in diam. Cystidia and cystidioles absent. Dendrohyphidia and hyphal pegs present in the hymenium. Basidia clavate, with four sterigmata and a basal clamp connection, 20–25 9 5–6 µm; basidioles similar to basidia in shape, but slightly smaller. Basidiospores allantoid to cylindrical, usually tapering towards the apiculus, hyaline, thin-walled, smooth, IKI–, CB–, 6–8 9 (1.5–)1.7–2.2 µm, L = 6.9 µm, W = 1.8 µm, Q = 3.8 (n = 40/1).
Index Fungorum Number: IF355679
Notes: Daedaleopsis hainanensis was recently described from tropical area of China (Li et al. 2016). It is distinct by annual, flabelliform, dimidiate or semicircular pilei with a glabrous, more or less yellowish-brown and concentrically sulcate pileal surface, a rose to pink fresh pore surface, round pores, the presence of dendrohyphidia and hyphal pegs, and allantoid to cylindrical basidiospores measuring as 6–8 9 1.7–2.2 µm.
Figure 1. Basidiocarps of Daedaleopsis confragosa
Figure 2. Microscopic structures of Daedaleopsis confragosa (drawn from Dai 1609). a. Basidiospores; b. Basidia and basidioles; c. Hyphae from trama. Bars: a = 5 µm; b–c = 10 µm
References:
Cui, Bao-Kai & Li, Hai-Jiao & Ji, Xing & Zhou, Jun-Liang & Song, Jie & Si, Jing & Yang, Zhu-Liang & Dai, Yu-Cheng. (2019). Species diversity, taxonomy and phylogeny of Polyporaceae (Basidiomycota) in China. Fungal Diversity 97, 137–392
Li HJ, Si J, He SH (2016) Daedaleopsis hainanensis sp. nov. (Polyporaceae, Basidiomycota) from tropical China based on morphological and molecular evidence. Phytotaxa 275:294–300
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