Commelina eckloniana Kunth

Chamaephytes, glabrous except for some long white straggling hairs; stems annual spreading, arising from a knobbly rootstock bearing long, fusiform, dark roots covered by root hairs. Stems c. 200-350 mm long, inter-nodes up to c. 90 mm long. Leaves linear-acuminate to ovate-acuminate, 60-100 mm long, (-3)8-25 mm broad, pale grey-green. Spathes solitary, obliquely funnelform, broad and short, recurved, 10-15 mm long, on straight, patent peduncles 10-25 mm long. Upper cyme exserted, 1-flowered, lower with flowers just exserted. Petals blue. Capsule quadrate, flat, c. 5 mm long; the dorsal locule not developed, the raised margin constricted between 4 seeds; seeds globose, tuberculate, c. 2 mm diam.