水马齿(原变种) shui ma chi (yuan bian zhong)

Callitriche fallax Petrov; C. verna Linnaeus; C. verna var. fallax (Petrov) H. Hara.

Bracts 0.5-1 mm, falcate, caducous. Fruit 0.9-1.4 × 0.8-1.1 mm, widest above middle; mericarps parallel; mature fruit black, mericarps sharply reticulate, reticulations appearing ± clearly in vertical rows; wing (0-)0.05-0.16 mm wide, mainly toward apex. Fr. throughout year.

Lakes, ponds, streams, ditches, swamps, marshes; 700-3800 m. Anhui, Fujian, Guangdong, Guizhou, N Heilongjiang, Hubei, Jiangxi, E Jilin, Liaoning, E Nei Mongol, Qinghai, Sichuan, Taiwan, SE Xizang, N Yunnan, Zhejiang [Bhutan, India, Japan, Kashmir, Korea, Nepal, Russia; throughout N part of N Hemisphere; introduced in Australia].