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Xizang (Tibet): Mangkang (Markam) Xian. Pass on highway 214 at Lawu Shan, just N of the city of Mangkang (Markam). Heavily grazed Kobresia and Carex meadows with Polygonum, Potentilla. 29°42'6"N, 98°31'32"E; 4400-4500 m.
Gregarious and fasciculate in soil (possibly on buried wood) under Rhododendron sp., in alpine meadow. Pileus 16-29 mm diam., broadly conical, occasionally with a small nipple on disc; margin straight, slightly flared in age; surface moist, slightly lubricous when wet, slightly shiny, glabrous, sulcate towards margin, pellucid-striate; dark-brown (6-7F6-8), fading from disc outward to light brown or yellowish-brown. Context thin, grayish-brown. Lamellae ascending-adnate, with a decurrent tooth, 27-30 reaching the stipe, close with 2-series of lamellulae, moderately broad, breadth to 4.5 mm, white initially, developing pale brownish-gray tones with age; edges concolorous, outline convex. Stipe 52-67 X 2-3.5 mm, central, terete to flattened & cleft, hollow, equal; surface moist, slightly shiny, minutely brownish-pruinose, a few specimens whitish-pruinose at apex, glabrescent below, smooth, pale grayish or pale brownish gray (5D-E4-5) with a pale grayish base; the base with scant white fibrils visible through clinging substrate. Odor indistinct.
Brian A. Perry
BAP247 14 July 2000

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