纤茎遍地金 xian jing bian di jin

Ascyrum filicaule Dyer in J. D. Hooker, Fl. Brit. India 1: 252. 1874; Hypericum filicaule (Dyer) N. Robson.

Plants erect to decumbent or prostrate and ± mat-forming; stems unbranched above or (in Yunnan) branched from upper 2 or 3 nodes. Stems terete or narrowly 2-lined. Leaves (except uppermost, sessile) to 1 mm petiolate, (4-)5-10(-15) × 2-8(-11) mm, broadly elliptic, lower gradually smaller, sometimes becoming minute and scalelike, thinly papery to membranous, abaxially paler, inframarginal glands reddish or pale, base cuneate to rounded-attenuate. Inflorescence 1-flowered. Pedicels (terminal) 0.5-1.5 mm. Flowers 6-12 mm in diam. Sepals 4, sometimes leaflike, outer 4-12 × 1.5-7 mm, inner 3-7 × 1-3 mm, margin entire, apex obtuse. Petals 4, 3-8 × 1-2.7 mm, 0.75-1.6 × as long as sepals. Stamens 10-20. Styles 0.5-0.8 × as long as ovary.

Rock crevices, grassy slopes; 3000-3900 m. SE Xizang, NW Yunnan [NE India, N Myanmar (Kachin), Nepal].