Allium angulosum, L.

1. A. angulosum L. , Sp. Pl. 300 (1753) View Cited Treatment .

Bulbs 0-5-1 cm in diameter; cylindrical or narrowly conical, clustered on a hori­ zontal rhizome; tunics membranous, thin. Stem 20-45 cm, angular, 2-edged above. Leaves 4-6, 10-25 cm x 1 -5-6 mm, basal, linear, canaliculate above, sharply keeled beneath in a living state. Spathe up to 1 cm, 2- to 5-lobed, persistent. Umbel 2-5-4- 5 cm in diameter, hemispherical, many-flowered; pedicels 10-30 mm, almost equal. Perianth cup-shaped; segments 4-6 x 1 -5-2-5 mm, pale purple, the outer cymbiform, narrowly ovate, the inner elliptical, longer than the outer, acute or obtuse. Stamens scarcely longer than the segments, with exserted anthers; filaments c. 5 mm, almost equal at base; anthers at first yellow, later dark purple. Capsule c. 3-5 mm. 2n = 16. Damp meadows near rivers. C. & E. Europe, extending to E. France and N. Italy. Au Bu Cz Ga Ge He Hu It Ju Po Rm Rs (C, W, E) [Rs (N, B)].

Not easily separable from 3 in a dried state, although the stamens are only slightly exserted, but when living distinguish­ able morphologically by the keel-forming midrib on the lower side of the leaf and ecologically by its preference for damp places subject to seasonal flooding.