taxonID	type	description	language	source
03F287F3FFBAFF88A0A0759FF5BCFBBA.taxon	etymology	Etymology: — Species epithet based on the Tianshan Mountain in Xinjiang, China, where the species was collected. Diagnosis: — Characterized by fairly inconspicuous, cottony-woolly ring, red to brownish-red scales gradually thinning out towards the marginal zone on the pileus, rarely clamped, guttulated basidiospores. Holotype: — CHINA, Xinjiang Province, Hejing county, Dalongchi Park (42 ° 27 ′ 34 ″ N, 80 ° 22 ′ 51 ″ E), alt. 2650 m, on rich soil with continuous and thick moss cover in a coniferous forest dominated by plants of Picea schrenkiana Fisch. & C. A. Mey., 11 Sept. 2020, Z. X. Zhao & B. Xu, HMUT 1112. GenBank accession numbers: — ITS: OL 584020, LSU: OL 584019 (not used in the analyses). Description: — Pileus 4 – 9 cm in diam, at first hemispherical to convex with involute margin, later convex to planodepressus, breaking up into appressed soon in central part, ± confluent fibrilloso-scales, which are red, to brownish red, scales gradually thinning out towards the marginal zone; margin slightly incurved, thin and sharp, sometimes torn. Lamellae emarginate, whitish to cream-colored, somewhat sinuate, rather close to medium spaced. Stipe 50 – 100 × 20 – 25 mm, solidus, cylindrical or tapering downwards, with a persistent but fairly inconspicuous, cottony-woolly ring on the upper part of the stipe, whitish and granulose scales above ring, below ring with irregular, light red to dark red fibrilloso-scales. Flesh whitish, solid; Odor very strong, especially when being fresh, like perfume; taste unknown. Basidiospores (4.5 –) 5.0 – 5.9 (– 7) × (4 –) 4.6 – 5 (˗ 6) μm [n = 50, Q = (1.02 –) 1.08 – 1.50 (– 1.57), Q = 1.29 ± 0.12], broadly ellipsoid to ellipsoid, non-amyloid, hyaline, guttulate, thin-walled, smooth. Basidia (29 –) 30 – 41 (– 45) × 5 – 8 μm, clavate, 4 - spored, rarely 2 - spored, hyaline, sterigmata up to 4 μm long. Pleurocystidia / cheilocystidia undetermined. Lamellar trama regular, hyaline, parallel, thin-walled hyphae 5 – 10 µm diam., sometimes branched. Pileipellis cutis, composed of hyaline, cylindrical, thin-walled hyphae 6 – 17 µm diam., sometimes branched. Stipitipellis formed by cylindrical 5 – 12 µm wide hyphae. Clamps present but rare. Ecology & Habitat: — Solitary to scattered on soil with thick mosses cover in forests dominated by Picea schrenkiana, fruiting in summer at alt 2650 m. Distribution: — Currently known only Hejing county, Xinjiang Province, China. Additional specimen examined: — CHINA. Xinjiang Province, Hejing (42 ° 27 ′ 34 ″ N, 80 ° 22 ′ 51 ″ E), alt. 2650 m, on rich soil with continuous and thick moss cover in a coniferous forest dominated by plants of Picea schrenkiana, 11 Sept 2020, Z. X. Zhao & B. X., HMUT 1114. GenBank accession numbers: — ITS: OL 584021, LSU: OL 584017 (not used in the analyses).	en	Zhao, Zhen-Xi, Song, Jia-Ge, Senanayake, Indunil C., Wu, Dong-Sheng, Wang, Guo-Qing, Xu, Biao (2022): Tricholoma tianshanense sp. nov., in Tricholoma sect. Caligata from Tianshan Mountains in China evidenced by morphological characters and phylogenetic analyses. Phytotaxa 549 (1): 22-30, DOI: 10.11646/phytotaxa.549.1.2
