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Xizang (Tibet): Mangkang (Markham) Xian. E of Dongda-La (pass) on highway 318, E of the town of Zogang on road to Mangkang (Markham). Seepages, dry steep slopes and level areas along river. 29°38'48"N, 98°8'1"E; 4300 m.
Gregarious and subfasciculate on steep slopes of alpine meadow. Pileus 10.5-35 mm diam; hemispherical and with or without a small apical papilla to broadly campanulate, eventually becoming planar; surface dry, becoming polished, smooth, glabrous, composed of appressed fibrils; brownish gray (5-6E4), with age taking on more brownish tones, the edges becoming black to blackish brown with moisture loss. Context thin, pale grayish. Lamellae ascending-adnate to strongly adnexed (nearly free), close with 2 series of lamellulae, moderately broad, breadth to 4.5 mm, brownish (5F5-6) to brownish-gray (5E4-5), fading to pale grayish with moisture loss; the edges concolorous initially, becoming darker brown with age, outline convex. Stipe 22-60 X 1.5-4.5 mm, central, terete or compressed, ±equal, hollow, surface dry, polished, glabrous, smooth, composed of tightly appressed fibrils; brownish gray(5-6E4) with streaks of darker brown and paler gray; base with whitish tomentum. Odor indistinct.
Brian A. Perry
BAP 259 18 July 2000

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