Bulb solitary, cylindric, sometimes narrowly ovoid-cylindric, 0.5--1(--1.5) cm in diam.; tunic brown to pale brown, thinly leathery, splitting. Leaves linear, sometimes slightly falcate, shorter than to subequaling scape, 3--10 mm wide, flat. Scape 20--70 cm, terete, covered with leaf sheaths only at base. Spathe 2- or 3-valved, persistent. Umbel globose, densely many flowered. Pedicels 1--1.5 × as long as perianth, ebracteolate. Perianth pale yellow to greenish yellow; segments oblong-elliptic to oblong-ovate, 5--6 × 2--2.5(--3) mm; inner ones sometimes slightly longer than outer. Filaments subulate, equal, 1.25--1.35 × as long as perianth segments, connate at base and adnate to perianth segments. Ovary ovoid to ovoid-globose, with concave nectaries covered by short, hoodlike projections at base. Style exserted. Fl. and fr. Jul--Sep.

* Damp slopes, meadows; 2700--5000 m. S Gansu, SE Qinghai, W Sichuan, E Xizang.