Polyporales » Polyporaceae » Perenniporiopsis

Perenniporiopsis sinensis 

Perenniporiopsis sinensis Y. Yang and C.L. Zhao

MycoBank number: 851227.

Basidiomata Annual, pileus solitary or imbricate, osseous, without odor or taste when fresh, projecting up to 3 cm, 3 cm wide, and 1 cm thick at base. Pileal surface orange-yellow to dark reddish-brown, verrucose; margin cream, obtuse. Pore surface white when fresh, becoming pale yellowish- to yellowish-brown when dry, pores round, 4–6 per mm; Context cream, rigidly osseous, up to 7 mm thick; tubes pale cream to honey yellow, rigidly osseous, up to 3 mm long. Hyphal system Trimitic; generative hyphae with clamp connections, colorless, thin-walled; skeletal and binding hyphae colorless, thick-walled; dextrinoid in Melzer’s reagent, CB+, unchanged in KOH. In the context, generative hyphae infrequent, colorless, thin-walled, rarely branched, 1–2.5 µm in diameter; skeletal hyphae dominant, colorless, thick-walled with a distinct lumen, infrequently branched, interwoven, 3–4 µm in diameter; binding hyphae colorless, thick-walled with a narrow lumen, frequently branched, interwoven, 1–2 µm in diameter. In the hymenophoral tramal, generative hyphae infrequent, colorless, thin-walled, usually unbranched, 1–2.5 µm in diameter; skeletal hyphae dominant, colorless, thick-walled with a narrow lumen, infrequently branched, interwoven, 2–3.5 µm in diameter; binding hyphae colorless, thick-walled with a narrow lumen, frequently branched, interwoven, 1–2 µm in diameter. Hymenium Cystidia absent, but fusiform cystidioles present, colorless, thin-walled, 11–18.5 × 4.5–7 µm; basidia clavate, with four sterigmata and a basal clamp connection, 15–18 × 8.5–10 µm; basidioles in shape similar to basidia, but slightly smaller. Basidiospores ellipsoid, truncate, colorless, thick-walled, smooth, dextrinoid in Melzer’s reagent, CB+, unchanged in KOH, (8.5–)9–11(–12) × (5–)5.5–6.5(–7) µm, L = 10.1 µm, W = 6.02 µm, Q = 1.62–1.68 (n = 60/2).

Additional specimen examined (paratype): China, Yunnan Province, Puer, Jingdong County, Kongqueshan Forest Park. GPS coordinates: 24°23′ N, 100°53′ E; altitude: 1800 m asl., on fallen angiosperm branches, leg. C.L. Zhao, 22 August 2018, CLZhao 8278 (SWFC).

Fig. 1 Maximum parsimony strict consensus tree illustrating the phylogeny of three new species and related species in Polyporales based on ITS + nLSU + mt-SSU + TEF1 + RPB1 + RPB2 sequences. Branches are labeled with maximum likelihood bootstrap values ≥ 70%, parsimony bootstrap values ≥ 50%, and Bayesian posterior probabilities ≥ 0.95. The new species are in bold.