Lobelia irrigua

Procumbent or decumbent, nearly glabrous perennial; stems c. zigzagged, rooting at nodes. Leaves distichous, linear to obovate or ovate, or orbicular, 2–40 mm long, 1–8 mm wide, entire or toothed, rather thick, glabrous and lustrous or occasionally minutely pubescent particularly on margins, base tapered gradually; petiole indistinct or absent. Flowers irregularly spaced along stem, male, female and bisexual flowers superficially similar; pedicels 0.5–20 mm long, glabrous. Calyx-lobes 0.4–1.5 mm long, entire; corolla weakly zygomorphic, 1.8–4.5 mm long, white or mauve-tinged on the back of the lobes and tube, lobes subequal, lanceolate to narrowly elliptic, c. 1.3–3.5 mm long, 0.7–1 mm wide, tube c. 0.5–2 mm long, slit to base, glabrous internally or minutely pubescent at very base; filaments 0.8–1 mm long, anther tube 1–1.2 mm long in male and bisexual flowers, seta of lower 2 anthers 0.1–0.3 mm long. Fruit ovoid to ellipsoid or broadly ellipsoid, 5–8 mm long; seeds ellipsoid, compressed, 0.7–0.9 mm long, light brown, reticulate, alveoles c. isodiametric. Flowers Sep.–Apr.; fruits Dec.–Mar.