Lobelia concolor

Prostrate or ascending dioecious perennial, glabrous or young growth sparsely and minutely pubescent; stems thick, usually purplish towards base, sometimes zigzagged, rooting at nodes. Leaves distichous, oblong-lanceolate to oblong-elliptic, 6–45 mm long, 2.5–20 mm wide, discolourous, often thick-textured, margins toothed, base abruptly contracted; petiole 0–2 mm long. Flowers c. regularly spaced; pedicels 3–15 mm long, glabrous (rarely sparsely and minutely pubescent). Calyx-lobes 1.5–2.7(–4) mm long, at least some toothed at base; corolla fan-shaped, 4.5–9.5 mm long, white tinged pink outside, lobes subequal but upper 2 more deeply cleft, lanceolate-subulate, 1.5–4 mm long, 0.4–1.3 mm wide, tube 2–5.5 mm long, split to within c. 0.5 mm of base, with fine retrorse hairs internally; filaments 2–6 mm long, anther tube 1.3–2.2 mm long in male flowers, c. 0.8–1 mm long in females, apical seta of 2 lower anthers 0.3–0.5 mm long. Fruit ovoid to globose, 4–10 mm long; seeds ellipsoid, slightly compressed, 0.7–0.9 mm long, brown, alveoles c. isodiametric (appearing pitted). Flowers mostly Nov.–Apr.; fruits Mar.–Aug.