Stems branched or almost unbranched, ascending or erect, caespitose, arising from a polycephalous rootstock, quadrangular at first (sometimes ± flattened), eventually terete, glabrous except when very young.
Inflorescence terminating main or lateral shoots, cymose, appearing paniculate, few-to many-flowered, pedunculate, with branches quadrangular, glabrescent.
Petals up to 6 mm. long, elliptic to oblanceolate, white, sometimes tinged with pink or green, streaked with dark purple-red.
Sepals 2–4 mm. long, elliptic to lanceolate, glabrescent.
Stamens c. 8 per fascicle; filaments glabrous.
Fasciclodes glabrous, spathulate, apiculate.
Berry 6–10 mm. in diam., dark red or black.
Shrublet or perennial herb 15–40 cm. high.
Seeds c. 3 mm. long.