Bulbs clustered, cylindric, slightly thickened at base, 0.3--0.6 cm in diam.; tunic grayish white, sometimes slightly tinged with red, papery, laciniate, apex sometimes fibrous. Leaves ca. 1/2 as long as scape, 0.5--1 mm wide, semiterete. Scape 15--35 cm, terete, covered with leaf sheaths only at base. Spathe 2-valved, persistent. Umbel hemispheric to globose, densely many flowered. Pedicels subequal, 2--3 × as long as perianth, ebracteolate. Perianth purple-red; outer segments ovate, 3--3.5 × 1.8 mm; inner ones ovate-oblong, 3.8--4.2 × 1.8--2.2 mm, apex obtuse, usually irregularly denticulate. Filaments equal, slightly shorter than to equaling perianth segments, connate at base and adnate to perianth segments; outer ones subulate; inner ones broadly ovate at base, with 1 obtuse tooth on each side, rarely entire. Ovary ovoid-globose, minutely tuberculate, without concave nectaries at base. Style slightly longer than ovary, not exserted. Fl. Aug.

* Slopes, pastures, sandy soils; 1500--2500 m. Gansu, NW Shaanxi.