长茎冷水花(原变种) chang jing leng shui hua (yuan bian zhong)

Subshrubs. Stems to 80 cm tall. Leaf blade elliptic-lanceolate or elliptic, base broadly cuneate or obtuse, margin entire or crenate distally. Inflorescences 1-2 cm. Male flowers dark purplish. Fl. Jan-Feb, fr. Mar-May.

Shaded wet places in forests often in limestone mountains; ca. 700 m. W Guangxi (Longzhou) [N Vietnam].

The plants are used medicinally as a diuretic and to treate traumatic injuries.