阿拉善韭 a la shan jiu

Allium alaschanicum Y. Z. Zhao.

Bulb solitary or in clusters of 2 or 3, cylindric, 0.8--2 cm in diam.; tunic yellowish brown to dark brown, laciniate or fibrous. Leaves subequaling to conspicuously longer than scape, 2--4 mm wide, adaxially channeled. Scape 15--25 cm, terete, covered with leaf sheaths only at base. Spathe 2-valved, persistent; beak long. Umbel hemispheric to globose, many flowered. Pedicels subequal, 1.5--2 × as long as perianth, ebracteolate. Perianth white or pale yellow; segments oblong to ovate-oblong, 4--6 × 1.7--2.5 mm; outer ones pale purple-red abaxially; inner ones slightly longer than outer. Filaments equal, 1.5--2 × as long as perianth segments, connate at base and adnate to perianth segments; outer ones subulate; inner ones broadened at base, base longer than wide, with 1 obtuse or acute tooth on each side. Ovary subglobose, with concave nectaries at base. Style exserted. Fl. and fr. Aug--Sep.

* Rock crevices, calcareous slopes, dry places; 1800--3100 m. W Nei Mongol (Helan Shan).