Polyporales » Polyporaceae » Vanderbylia

Vanderbylia vicina

Vanderbylia vicina (Lloyd) D.A. Reid 1973, in Cui, et al., Fungal Diversity 97, 137–392 (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, 5–6 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, 2.2–4.2 µm in diam; skeletal hyphae dominant, hyaline, thick-walled, flexuous, interwoven, 3.3–6.1 µm in diam. Generative hyphae infrequent, hyaline, thin-walled, 2–3.5 µm in diam; skeletal hyphae dominant, hyaline, thick-walled with a wide to narrow lumen, flexuous, interwoven, 3.5–5.7 µm in diam. Cystidia absent; fusoid cystidioles present, hyaline, thin-walled, 12–28 × 5–8 µm. Arboriform hyphae present, 1.5–6 µm wide, branching at the dissepimental edges. Basidia clavate, with four sterigmata and a basal clamp connection, 12–17 × 8–15 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 Number:  IF325399

Notes: Vanderbylia vicina is similar to V. fraxinea by having pileate basidiocarps and smaller pores. However, the latter species has smaller basidiospores (6–6.4 × 5–5.3 µm).

 

Figure 1. Basidiocarps of Vanderbylia vicina

 

 

Figure 2.  Microscopic structures of Vanderbylia vicina (drawn from Dai 9377). a. Basidiospores; b. Basidia and basidioles; c. Cystidioles; d. Hyphae from trama. Bars: a = 5 µm; b–d = 10 µm

 

Reference:

Cui, B.K., & Li, H.J., & Ji, X., & Zhou, J.L., & Song, J. & Si, J., & Yang, Z.L., & Dai, Y.C. (2019). Species diversity, taxonomy and phylogeny of Polyporaceae (Basidiomycota) in China. Fungal Diversity 97, 137–392

 

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