Bulb solitary or clustered, subcylindric, 0.7--1.3 cm in diam., attached to a horizontal, stout rhizome; tunic grayish black, sometimes tinged with purple, membranous, entire. Leaves linear, shorter than to subequaling scape, 2--5 mm wide, flat, smooth, apex obtuse. Scape 13--30 cm, terete, 2-angled, covered with leaf sheaths only at base. Spathe 2-valved, persistent. Umbel hemispheric, densely many flowered. Pedicels subequaling perianth, ebracteolate. Perianth white to yellow; outer segments ovate, boat-shaped, 4--6 × 2--2.5 mm; inner ones ovate-oblong, 4.5--7 × 2.2--2.9 mm. Filaments equal, equaling to slightly longer than perianth segments, connate at base and adnate to perianth segments; outer ones subulate; inner ones triangular. Ovary obovoid-globose, without concave nectaries at base. Style longer than ovary, exserted. Fl. Jul.

* Slopes; 2100--2500 m. WC Hebei (Huailai Xian, Xiaowutai Shan).