Phanerochaete nigella Q. Li & C. L. Zhao 2026, sp. nov.
Year: 2026
Type: article
Abstract: Phanerochaete nigella Q. Li & C. L. Zhao sp. nov. Figs 7, 8, 9 Holotype. China, • Yunnan Province, Puer, Jinggu County, Mangyu Grand Canyon, 23°53'N, 100°26'E, elevation 1,200 m asl., on fallen angiosperm branch, leg. C. L. Zhao, 6 October 2025, CLZhao 48735 (SWFC 00048735). Etymology. Nigella (Lat.) refers to the black hymenial surface of the type specimens. Basidiomata. Annual, resupinate, adnate, coriaceous, without odor or taste when fresh, becoming fragile upon drying, up to 8 cm long, 4 cm wide, 100 µm thick. Hymenial surface tuberculate, gray when fresh, gray to black upon drying. Sterile margin grayish-white, narrow, up to 0.5 mm wide. Hyphal structure. Monomitic, generative hyphae with simple septate, colorless, numerous crystals present among hyphae, thin- to thick-walled, branched, interwoven, 2–4 µm in diameter, IKI –, CB –; tissues unchanged in KOH. Hymenium. Cystidia abundant, tubular, slightly flexuous, thin-walled, embedded in subhymenium or exserted, 23–47 × 3–4.5 µm. Basidia clavate, slightly flexuous, occasionally with oil drops, with four sterigmata and a basal simple septum, 15–25 × 4.5–5.5 µm; basidioles dominant, occasionally with oil drops, similar to basidia in shape, but slightly smaller. Basidiospores. Ellipsoid, colorless, smooth, thin-walled, often with oily drops, IKI –, CB –, (4.5 –) 4.7–5.7 (– 5.9) × 2.5–3.2 µm, L = 5.20 µm, W = 2.90 µm, Qm = 1.61 ± 0.18 (n = 60 / 2). Type of rot. White rot. Additional specimen (paratype) examined. China, • Yunnan Province, Puer, Jinggu County, Mangyu Grand Canyon, 23°53'N, 100°26'E, elevation 1,200 m asl., on fallen angiosperm branch, leg. C. L. Zhao, 15 November 2025, CLZhao 50724 (SWFC 00050724).
Language: English
Domain: Life Sciences
Open Access status: green
OpenAlex ID: W7204234651