Flowering and fruiting from June to August.
Allium kingdonii is occurring in SE Xizang.
Bulb usually solitary, cylindric, ca. 0.6 cm in diameter; tunic dull yellowish red, thinly leathery, laciniate. Leaves linear, shorter than scape, 1.5-4 mm wide, apex obtuse. Scape 10-30 cm tall, terete, covered with leaf sheaths only at base. Spathe 2-valved, persistent or deciduous. Umbel few flowered. Pedicels unequal, shorter to slightly longer than perianth, ebracteolate. Perianth purple-red; segments narrowly oblong, 13-18 mm long, 3-4.2 mm wide, apex obtuse; inner ones slightly longer and narrower than outer. Filaments subulate, equal, ca. 1/2 as long as perianth segments, connate at base for ca. 1 mm wide; outer ones adnate to perianth segments for ca. 1 mm; inner ones adnate for ca. 2 mm. Ovary globose, without concave nectaries at base. Style longer than ovary; stigma slightly 3-cleft.
Growing in scrub, moist places; 4500-5000.
