Allium subangulatum is a Chinese species of wild onion, native to Gansu, Ningxia and Qinghai Provinces.Flora of China v 24 p 184 紫花韭 zi hua jiu Allium subangulatumKew World Checklist of Selected Plant Families
Allium subangulatum produces a cluster of narrow bulbs, each up to 10 mm across. Scape is up to 35 cm tall. Leaves are long and very narrow, shorter than the scape and usually less than 1 mm wide. Umbel is hemispheric with many flowers crowded together. Tepals reddish-purple with darker red midvein.Regel, Eduard August von. 1887. Trudy Imperatorskago S.-Peterburgskago Botaničeskago Sada 10(1): 340 in LatinRegel, Eduard August von. 1887. Trudy Imperatorskago S.-Peterburgskago Botaničeskago Sada 10(1): plate V (5), figure 1 at left line drawing of Allium subangulatum
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