对叶山葱 dui ye shan cong

Allium victorialis Linnaeus var. listera (Stearn) J. M. Xu.

Bulb solitary or clustered, subcylindric; tunic grayish brown to blackish brown, reticulate. Leaves 2; petiole 2--10 cm; leaf blade elliptic to ovate-orbicular, 8--12 × 3--9.5 cm, base cordate to rounded, apex acute or acuminate. Scape 25--80 cm, terete, covered with leaf sheaths for 1/4--1/2 its length. Spathe 2-valved, persistent. Umbel globose. Pedicels 2--4 × as long as perianth, ebracteolate. Perianth white or slightly tinged with green, very rarely tinged with red; outer segments boat-shaped, 4--5 × 1.5--2 mm, apex obtuse; inner ones elliptic-ovate, (4.5--)5--6 × 2--3 mm, apex obtuse, usually denticulate. Filaments 1.3--2 × as long as perianth segments, connate at base and adnate to perianth segments; outer ones subulate; inner ones narrowly triangular, 1--1.5 mm wide at base, wider than outer ones. Ovary constricted at base into a stipe ca. 1 mm; ovules 1 per locule. Fl. and fr. Jun--Aug. 2 n = 16*.

* Forests, shady and moist slopes, pastures; 600--2000 m. Anhui, Hebei, Henan, Jilin, Shaanxi, Shanxi.