Peniophorella variegata K. Y. Luo, Yuan Yuan & Y. C. Dai sp. nov.

Figs 7, 8

Holotype.

China • Jiangxi Province, Nanchang, Shengshuitang National Forest Park. GPS coordinates: 28.991150°N, 115.533628°E; elevation: 220 m a. s. l. On a fallen branch of Pinus massoniana, 26 April 2025, Yuan 2232 (BJFC 061778).

Etymology.

Variegata (Lat.): refers to the species having variable cystidia.

Description.

Basidiomata annual, resupinate, adnate, loosely attached, not easily separable from substratum, farinaceous, without odour and taste when fresh, white to pale yellowish when fresh and upon drying, up to 7 cm long, 1.5 cm wide, and 300 µm thick. Hymenophoral surface smooth; margin distinct, thin, pale yellowish, up to 2 mm long.

Hyphal structure: Hyphal system monomitic; generative hyphae with clamp connections, thin-walled, moderately branched mostly with a right angle, flexuous, loosely interwoven, 2.5–4 μm in diameter, IKI –, CB –; tissues unchanged in KOH.

Hymenium: Cystidia of three types: (1) capitate cystidia frequent, hyaline, thin-walled, 18.5–24 × 4–7 μm; (2) leptocystidia infrequent, subcylindrical, hyaline, thin-walled, sometimes apically encrusted, 19–31 × 5–7 μm; (3) subulate cystidia infrequent, hyaline, thin-walled, sometimes protruding from the hymenium up to 20 μm, 38–53 × 4–7 μm. Hyphidia frequent, hyaline, thin-walled, 13–16 × 2.5–4 μm. Cystidioles rare, subcylindrical or sphaeropedunculate, hyaline, thin-walled, 11–14 × 6–8 μm. Basidia clavate, more or less flexuous, colorless, thin-walled, smooth, with four sterigmata and a basal clamp connection, occasionally with oily contents, 25–46 × 6–12 μm. Basidioles similar in shape to basidia, but distinctly smaller.

Basidiospores: Short cylindric to oblong-ellipsoid, sometime slightly curved, hyaline, thin-walled, smooth, occasionally with oily contents, IKI –, CB –, (7.3 –) 7.9–10.8 (– 12.5) × (3.1 –) 3.9–5.1 (– 5.8) µm, L = 9.44 µm, W = 4.50 µm, Q = 2.07–2.13 (n = 60 / 2).

Type of rot.

White rot.

Additional specimen (paratype) examined.

China • Jiangxi Province, Nanchang, Shengshuitang National Forest Park. GPS coordinates: 28.991150°N, 115.533628°E; elevation: 220 m a. s. l. On a fallen branch of Pinus massoniana, 26 April 2025, Yuan 2250 (BJFC 061796).