Polyporales » Polyporaceae » Datroniella

Datroniella scutellata

Datroniella scutellata (Schwein.) B.K. Cui, Hai J. Li & Y.C. Dai 2014, in Cui, et al., Fungal Diversity 97, 137392 (2019)

            Diagnosis: Basidiocarps annual, effused-reflexed or pileate, without odor or taste when fresh, becoming corky upon drying. Pilei projecting up to 8 mm, 12 mm wide, and 3 mm thick at base. Pileal surface yellowish brown to black from margin towards the base, glabrous and sulcate. Pore surface white or cream to pale brown when dry; pores round, 35 per mm; dissepiments thin, entire. Context yellowish brown to brown, corky, up to 2 mm thick. Tubes concolorous with context, corky, up to1 mm long. Hyphal structure. Hyphal system dimitic; generative hyphae bearing clamp connections; skeletal hyphae IKI, CB+; tissues turning to black in KOH and fading when dry. Generative hyphae infrequent, hyaline, thin-walled, moderately branched, 22.5 µm in diam; skeletal hyphae dominant, pale brown, thick-walled with a narrow lumen to subsolid, interwoven, moderately to frequently branched, straight to flexuous, with an unbranched, thick-walled basal stem, 3.84.5 µm wide, up to 200 µm long, the branches 1.73.8 µm wide, 200360 µm long. Generative hyphae infrequent, hyaline, thin-walled, rarely branched, 1.52.3 µm in diam; skeletal hyphae dominant, pale brown, thick-walled with a narrow lumen to subsolid, interwoven, frequently branched, straight to flexuous, then occasionally with lateral aborted processes, 35 µm wide in the main part, up to 150 µm long, the branches 23.5 µm wide, 120370 µm long. Cystidia and cystidioles absent. Dendrohyphidia absent. Basidia clavate, with four sterigmata and a basal clamp connection, 2027 9 68 µm; basidioles in shape similar to basidia, but smaller. Basidiospores cylindrical, hyaline, thin-walled, smooth, usually with one to three guttules, IKI, CB, (7.6–)7.89.2(–9.8) 9 33.6(–3.8) µm, L = 8.53 µm, W = 3.13 µm, Q = 2.692.76 (n = 60/2).

Index Fungorum Number: IF803227

Notes: Datroniella scutellata is characterized by its effused-reflexed to pileate basidiocarps, small and round pores (35 per mm), and white or cream to pale brown pore surface (Li et al. 2014).