Pleurotus sinensis L. Zeng, Y. F. Sun & B. K. Cui, 2025

Zeng, Long, Xu, Yi-Hua, Wan, Le-Le, Sun, Yi-Fei & Cui, Bao-Kai, 2025, Taxonomy and phylogeny of the Pleurotus djamor complex with descriptions of a new species from China, MycoKeys 126, pp. 119-133 : 119-133

publication ID	https://doi.org/10.3897/mycokeys.126.162530
DOI	https://doi.org/10.5281/zenodo.17883420
persistent identifier	https://treatment.plazi.org/id/502D2EC4-654B-576E-A0C4-7952CDDA9A94
treatment provided by	MycoKeys by Pensoft
scientific name	Pleurotus sinensis L. Zeng, Y. F. Sun & B. K. Cui
status	sp. nov.

Treatment

Pleurotus sinensis L. Zeng, Y. F. Sun & B. K. Cui sp. nov.

Figs 3 View Figure 3 , 4 View Figure 4

Diagnosis.

Pleurotus sinensis is characterized by a pileus that is white to pinkish buff or flesh-pink pileus when young, turning yellow at maturity, flabelliform, spatulate, or petaloid in shape, with inflexed and occasionally wavy margins with age.

Holotype.

China • Liaoning Province, Shenyang, Dadong District , 3 July 2024, Cui 23439 ( BJFC) .

Etymology.

“ sinensis ” (Lat.) refers to specimens derived from China.

Description.

Pileus 30–70 × 35–90 mm, flabelliform, spatulate, or petaloid, white to pinkish buff (5 A 3) or flesh-pink (8 A 3 / 9 A 4) when young, becoming yellow at maturity; with inflexed and wavy margin with age; glabrous, smooth to touch; margin entire (Fig. 4 View Figure 4 ). Lamellae decurrent, margin entire, l. 5– 3 mm in dry state, white when young becoming pinkish buff (5 A 3) when old. Stipe 5–15 mm long × 5–10 mm diam, laterally stipitate or sessile. Context 1–1.5 mm thick when dry.

Basidiospores (6.2 –) 6.8–9.8 (– 10.2) × (3.3 –) 3.5–5.5 (– 5.7) μm, L = 8.08 μm, W = 4.18 μm, Q = 1.78–2.11 (n = 60 / 2), cylindrical-oblong, hyaline, thin-walled, smooth, IKI –, CB –. Basidia 23.6–28.3 × 5.2–6.8 μm, clavate, 4 – spored, hyaline, thin-walled. Basidioles 15.8–24.2 × 4.9–5.2 μm, in shape similar to basidia. Cheilocystidia hyaline, thin-walled, clavate with mucronate, 22–41.7 × 2.6–3.4 μm. Pleurocystidia absent. Hymenophoral trama dimitic, with clamped generative hyphae 3.6–6.8 μm diam and skeletal hyphae 2.5–4.9 μm diam. Pileus trama dimitic, with generative hyphae 3.4–7.7 μm diam and skeletal hyphae 2.5–4.8 μm diam. Stem context also dimitic, with generative hyphae 4.5–6.8 μm diam and skeletal 2.6–5.2 μm diam.

Habitat and distribution.

Solitary, gregarious to imbricate, on angiosperm trees or on dead and decaying wood in the subtropical and temperate zones of China.

Additional specimens examined ( paratypes).

China • Guizhou Province, Guiyang, Guizhou Academy of Agricultural Sciences , 17 June 2016, Dai 16572 ( BJFC) ; • Guangdong Province, Shenzhen, Futian District, Futian Mangrove Ecological Park , 20 April 2024, Cui 23262 ( BJFC), Cui 23263 ( BJFC) ; • Sichuan Province, Chengdu , 1 August 2024, Cui 23999 ( BJFC) ; • Liaoning Province, Fushun , 4 July 2024, Cui 23450 ( BJFC) .