56. Allium bidentatum Fischer ex Prokhanov & Ikonnikov-Galitzky, Mater. Comm. Étude Republ. Mongol. Tannou-Touva. 2: 83. 1929.
砂韭 sha jiu
Allium bidentatum var. andaense Q. S. Sun; A. edentatum Y. P. Hsu; A. omiostema Airy Shaw; A. polyrhizum Turczaninow ex Regel var. potaninii Regel.
Bulbs usually densely clustered, cylindric, sometimes slightly thickened at base, 0.3--0.4 cm in diam.; tunic brown to grayish brown, thinly leathery, laciniate, apex sometimes fibrous. Leaves shorter than scape (usually ca. 1/2 as long), 1--1.5 mm wide, semiterete. Scape 10--30 cm, terete, covered with leaf sheaths only at base. Spathe 2-valved, persistent. Umbel hemispheric, densely many flowered. Pedicels 1(--1.5) × as long as perianth, ebracteolate. Perianth red to pale purple-red; outer segments oblong-ovate to ovate, 4--5.5 × 1.5--2.8 mm; inner ones narrowly oblong to oblong-elliptic, 5--6.5 × 1.5--3 mm, apex subtruncate, usually irregularly denticulate. Filaments equal, slightly shorter than perianth segments, connate at base and adnate to perianth segments for 0.6--1 mm; outer ones subulate; inner ones ovate-oblong for ca. 4/5 their length, with 1 obtuse tooth on each side, rarely entire. Ovary ovoid-globose, minutely or inconspicuously tuberculate, without concave nectaries. Style not exserted. Fl. and fr. Jul--Sep. 2 n = 32*.
Sunny slopes, pastures, meadows, saline places; 600--2000 m. Hebei, Heilongjiang, Jilin, Liaoning, Nei Mongol, Shanxi, NE Xinjiang [Kazakhstan, Mongolia, Russia].