Polyporales » Polyporaceae » Perenniporia

Perenniporia medulla-panis

Perenniporia medulla-panis (Jacq.) Donk 1967, in Cui, et al., Fungal Diversity 97, 137392 (2019)

Diagnosis: Basidiocarps annual to perennial, usually resupinate, corky when dry, up to 8 cm long, 3.5 cm wide and 5 mm thick at center. Pore surface white when fresh, white to cream when dry; pores round, 46 per mm; dissepiments thick, entire. Subiculum thin, cream, up to 1 mm thick. Tubes concolorous with pore surface, corky, up to 4 mm thick. Hyphal system dimitic to trimitic; generative hyphae bearing clamp connections; skeletal and binding hyphae dextrinoid, CB+; tissues unchanged in KOHGenerative hyphae infrequent, hyaline, thin-walled, branched, 2.54 µm in diam; skeletal hyphae dominant, hyaline, thick-walled with a wide to narrow lumen, frequently branched, interwoven, 1.52.1 µm in diam; binding hyphae hyaline, thick-walled, frequently branched, flexuous, interwoven, 0.71 µm in diam. Tubes. — Generative hyphae infrequent, hyaline, thin-walled, branched, 2.13 µm in diam; skeletal hyphae dominant, hyaline, thick-walled with a wide to narrow lumen, frequently branched, interwoven, 1.52.1 µm in diam; binding hyphae hyaline, thick-walled, frequently branched, flexuous, interwoven, 0.71 µm in diam. Cystidia absent, fusoid cystidioles present, hyaline, thin-walled, 1019.8 × 1.56.1 µm. Basidia clavate, with four sterigmata and a basal clamp connection, 10.520.5 × 59.9 µm; basidioles dominant, in shape similar to basidia, but slightly smaller. Basidiospores ellipsoid, truncate, hyaline, thick-walled, smooth, dextrinoid, CB+, (4.7–)4.95.5(– 6) × (3.7–)3.94.5(–4.8) µm, L = 5.07 µm, W = 3.99 µm, Q = 1.251.28 (n = 60/3).

Index Fungorum NumberIF335815

Notes: Perenniporia albo-incarnata (Pat. & Gaillard) Decock & Ryvarden is similar to P. medulla-panis by having resupinate basidiocarps and truncate, dextrinoid basidiospores, but it differs from P. medulla-panis by having larger basidiospores (67 × 56 µm, Decock & Ryvarden 2011). Perenniporia guyanensis Decock & Ryvarden and P. medulla-panis share similar basidiospores (55.5 × 44.5 µm), but it differs by its smaller pores (89 per mm, Decock & Ryvarden 2011).