Polyporales » Polyporaceae » Vanderbylia

Vanderbylia vicina

Vanderbylia vicina (Lloyd) D.A. Reid 1973, in Cui, et al., Fungal Diversity 97, 137392 (2019)

Diagnosis: Basidiocarps perennial, pileate, solitary, corky, without t odor or taste when fresh, woody hard upon drying. Pilei applanate, semicircular, smooth to occasionally slightly warted, projecting up to 4.5 cm, 7.9 cm wide and 3 cm thick at base. Pileal surface brown to dark brown when fresh, dark brown when dry. Pore surface pale ochraceous to pinkish- ochraceous when fresh, becoming brown when bruised, buff-yellow to orange-brown upon drying; pores tiny, round, 56 per mm; dissepiments thin, entire. Context buff-yellow to buff, woody hard, about 2 mm thick, with a thin dark brown to blackish crust. Tubes concolorous with pore surface, woody hard, up to 2.8 cm thick. Hyphal system dimitic; generative hyphae bearing clamp connections; skeletal hyphae dextrinoid, CB+; tissues unchanged in KOH. Generative hyphae infrequent, hyaline, thin-walled, 2.24.2 µm in diam; skeletal hyphae dominant, hyaline, thick-walled, flexuous, interwoven, 3.36.1 µm in diam. Generative hyphae infrequent, hyaline, thin-walled, 23.5 µm in diam; skeletal hyphae dominant, hyaline, thick-walled with a wide to narrow lumen, flexuous, interwoven, 3.55.7 µm in diam. Cystidia absent; fusoid cystidioles present, hyaline, thin-walled, 1228 × 58 µm. Arboriform hyphae present, 1.56 µm wide, branching at the dissepimental edges. Basidia clavate, with four sterigmata and a basal clamp connection, 1217 × 815 µm; basidioles in shape similar to basidia, but smaller. Basidiospores subglobose to obovoid or drop-shaped, hyaline, thick-walled, smooth, strongly dextrinoid, CB+, 8 - 8.9 × (6.1 -)6.9 - 7.5(-8) µm, L = 8.4 µm, W = 7.09 µm, Q = 1.18 (n = 30/1).

Index Fungorum NumberIF325399

Notes: Vanderbylia vicina is similar to V. fraxinea by having pileate basidiocarps and smaller pores. However, the latter species has smaller basidiospores (66.4 × 55.3 µm).