taxonID	type	description	language	source
CF3A8786FFE6020BAD87F995FD77F83D.taxon	diagnosis	Diagnosis: — Cyathus magnipilosus is characterized by an exoperidium with lighter colors, a slightly fimbriated mouth in a continuous pattern, a long exoperidium tomentum (up to 1.5 mm), black peridioles with a smooth surface, elongated to cylindrical basidiospores, and single-layered cortex. Etymology: — refers to the long and well-defined tufts of tomentum. Holotype: — INDONESIA. West Kalimantan, Borneo: Betung-Kerihun National Park, 1 ° 24 ’ 18.3 ” N, 112 ° 28 ’ 30.9 ” E, elev. 187 m, H. Tsukaya. 22 December 2011. (TNS-F- 45956!). Gene sequence holotypes: — ITS (PQ 045665), LSU (PQ 046248). Description: — Basidiomata infundibuliform, 8.6 – 9.6 mm in height, 5.8 – 6.5 mm at the mouth, not expanded in the top or tapering at the base. Pedicel absent. Emplacement 1.9 – 3.1 mm diam., light brown (5 D 8), conspicuous, smooth. Exoperidium hirsute, golden brown to linoleum brown (5 D 7 – 5 E 7), with long tomentum of 1.0 – 1.5 mm, arranged in irregular and flexible tufts. External wall smooth to inconspicuously plicate, with 0.5 – 0.7 mm between the folds. Mouth slightly fimbriate in a continuous pattern, 0.2 – 0.3 mm, light brown (5 D 8). Mesoperidium dark brown in color. Endoperidium brownish grey to brownish orange (6 C 2 – 6 C 3), inconspicuously plicate with 0.4 – 0.7 mm between the folds, perceptibly bright, not contrasting with the exterior. Basal triangle 1.8 – 3.6 mm, black in color. Epiphragm not observed; peridium walls microscopically composed of three different layers: (1) outer wall composed of aseptate interwoven hyphae with 2.9 – 3.2 µm wide with clamp connections, unchanged in KOH; (2) middle layer composed of pseudoparenchymatous, with cells 15.3 – 22.0 × 11.2 – 18.7 µm, globose to elongated (Q = 1.0 – 1.9); (3) inner wall composed of densely interwoven hyphae with 2.4 – 3.3 µm wide with clamp connections, unchanged in KOH. Peridioles black in color, 1.9 – 2.1 × 1.7 – 1.9 mm, up to 6 per basidiomata, circular to elliptical at the edges; peridiole surface smooth in the upper part; tunica present, thin, hyaline. Single-layered cortex with compact hyphae, slightly wavy at the bottom. Hymenium grey in color, 1.4 mm in width × 0.08 mm in height; sub-hymenium grey in color, 0.10 mm thick in the upper part, 0.04 mm in the lateral part, and 0.10 mm at the base, microscopically composed of interwoven hyphae in a gelatinous matrix Basidiospores smooth, hyaline, 7.4 – 15.6 × 4.1 – 9.7 µm (L = 10.0 µm; W = 5.4 µm), elongated to cylindrical (Q = 1.6 – 2.3), elongated shape in average (Qm = 1.9), apicule absent, and basidiospore wall 0.9 – 2.1 µm. Habitat and distribution: — On decaying wood, with gregarious growth. The new species is only known from the type locality, a National Park located in Indonesia.	en	Góis, Jefferson Dos Santos, Cruz, Rhudson Henrique Santos Ferreira Da, Baseia, Iuri Goulart, Hosaka, Kentaro (2024): A new species of Cyathus (Nidulariaceae, Basidiomycota) from Kalimantan, Borneo. Phytotaxa 677 (1): 66-76, DOI: 10.11646/phytotaxa.677.1.3, URL: https://doi.org/10.11646/phytotaxa.677.1.3
