Allium ostrowskianum Regel; A. platystemon Karelin & Kirilov.

Bulb solitary, ovoid-globose, 1.5--2 cm in diam.; tunic grayish, papery. Leaves 2, linear, longer than scape, 4--6(--8) mm wide, margin scabrous. Scape (5--)15--20 cm, terete, covered with leaf sheaths only at base. Spathe 2- or 3-valved, sometimes reddish, scarious, apex acuminate. Umbel subglobose, laxly 10--15-flowered. Pedicels equaling or a few longer than perianth, rarely shorter, ebracteolate. Perianth red, cupular; segments with dark midvein, broadly elliptic, 8--11 × 4--4.5 mm, apex obtuse or gradually attenuate, not acute. Filaments unequal, ca. 1/2 as long as perianth segments, connate and adnate to perianth segments for ca. 1/2 their length; inner ones ± lanceolate-ovate, wider than outer ones. Ovary ovoid, without concave nectaries. Style short; stigma 3-cleft. Fl. Jul--Aug. 2 n = 14, 16.

Gravelly slopes; 2500--3000 m. N and W Xinjiang (Altay Shan, Tian Shan) [Afghanistan, Kazakhstan, Kyrgyzstan, Pakistan, Russia, Tajikistan, Uzbekistan; SW Asia].