Panaeolus pallidus M. Q. He & R. L. Zhao, sp. nov.

作者：Mao-Qiang He, Wen-Qiang Yang, Dorji Phurbu, Fei Liu, Jiaxin Li, Bin Cao, Rui-Lin Zhao · 发表于：Zenodo (CERN European Organization for Nuclear Research) · 年份：2026 · DOI：10.5281/zenodo.18303995 · 研究领域：Mycorrhizal Fungi and Plant Interactions、Fungal Biology and Applications、Slime Mold and Myxomycetes Research

Panaeolus pallidus M. Q. He & R. L. Zhao sp. nov. Fig. 11 Etymology. pallidus (Lat.) refers to the white and light color of the basidiome. Diagnosis. Panaeolus pallidus has relatively large basidiomes with limoniform basidiospores and narrowly cylindrical, flexuose cheilocystidia. Holotype. CHINA. Gansu Province: Wuwei, Qilian Mountain National Nature Reserve, Haxi, 22 August 2018, Mao-Qiang He, HMAS 287494 (ZRL 20180988). Description. Pileus 17.3–73.6 mm in diam., hemispheric most, also could be plane when totally mature, disc slightly umbonate or flattened, gray (pantone warm gray 1 c), light brown (pantone 467 c), sometimes hygrophanous, surface dry, smooth, occasionally rugulose, margin slightly exceeding gills. Lamellae adnate, close, broad, mottled grayish to blackish, entire, with a white edge. Stipe equal, hollow, 91.8–147.4 mm long, 3.0– 5.4 mm thick, with the same color as pileus, smooth, pruinose, longitudinally striate, especially on the upper side, base with whitish mycelium. Basidiospores 16.2–18.2 × 11.1–12.6 μm, [x = 17.2 ± 0.6 × 11.8 ± 0.4, Q = 1.4–1.5, Q m = 1.5 ± 0.0, n = 20], limoniform, blackish brown when mature, smooth, thick wall, germ pore distinctive. Basidia 24.6–40.6 × 10.7–15.3 μm, 4 - spored, smooth, hyaline. Cheilocystidia 36.0–61.3 × 4.6–11.4 μm, narrowly cylindrical, flexuose, with an inflated or globose head, hyaline, smooth. Pleurocystidia 29.0–33.7 × 11.1–13.6 μm, clavate to narrowly clavate, hyaline, smooth. Cuticle composed of large vesic...