Ample laxly branched plant, subshrubby in lower, herbaceous in upper parts, up to c. 1 m. tall and broad. Stems up to c. 5 mm. diam., glab. or us. nearly so, very finely striate, narrowly margined, somewhat zigzag, internodes up to c. 10 cm. long. Lvs us. of diverse form, often several forms on an individual. Lamina thin, membr., ± glab., reticulations evident; 4-6 × 1·5-3 cm., with smaller axillary Iflts up to c. 10×7 mm., oblong to ovate-oblong to narrow ovate-oblong. Infl. an almost regular to a slightly irregular cymose umbel. Peduncle very slender, up to 15 mm. long, patent; pedicels almost filiform, up to 10 mm. long. Calyx-lobes strongly reflexed at fruiting stage. Corolla c. 8 mm. diam.; anthers 1.1-2 mm. long. Berries black, glistening, ± 6 mm. diam. Seeds (1)-1·5 mm. long. Baylis finds n = 12, pollen-grain diam. in lacto-phenol 20-27 µ, stone-cell masses in fruiting stage 0-4.