荸艾 bi ai

Lythrum volgense D. A. Webb.

Herbs, delicate, erect or decumbent, to 12 cm, spreading. Leaves alternate, linear or narrowly spatulate, 3-14 × 0.3-3 mm, apex mucronate or slightly obtuse. Flowers 6-merous; floral tube 1-1.5 mm; epicalyx segments linear, shorter than to as long as sepals. Stamens 2, inserted at base of calyx tube. Seeds to 1 mm. 2n = 10.

Highlands. Xinjiang [C Asia; Europe].