滇西百蕊草 dian xi bai rui cao

Herbs perennial; rhizomes thick and long. Stems erect or ascending usually many branched, slender, 25-40 cm. Leaves dense, gray-green, sessile, linear, 20-50 × ca. 1.5 mm, 1-veined, apex acute. Inflorescences racemelike, lax, often branched, proximal part with 2-5-flowered branches; bracts inserted at tip of pedicel, narrowly linear, 10-25 mm; pedicel 4-9 mm, ascending or almost patent; bracteoles 2, narrowly linear, 5-10 mm, much shorter than bract. Perianth 5-merous, white, broadly campanulate, ca. 3.5 mm, divided to middle, lobes triangular-oblong, apex recurved, becoming incurved, clawlike. Stamens and style not exserted. Ovary stalk 0.8-1 mm. Nutlet ovoid to ellipsoid, ca. 3 mm, with raised longitudinal veins, shortly stalked; persistent perianth ca. 1 mm. Fl. May.

* Grassy slopes in Pinus forests; 2900-3700 m. Sichuan, Yunnan.