Lobelia anceps

Decumbent to ascending glabrous perennial, rooting at nodes; at least upper stems usually narrowly winged, often maroon tinged. Leaves oblanceolate or obovate-spathulate to linear-elliptic, 10–85 mm long, 1.5–20 mm wide, toothed or some entire, reducing toward inflorescence; petiole 0–20 mm long. Flowers bisexual, in terminal raceme or narrow panicle; pedicels 2–12 mm long, minutely pubescent. Calyx-lobes 1–2(–3) mm long, entire; corolla 2-lipped, 5–13 mm long, light blue to violet (rarely almost white), upper 2 lobes narrowly elliptic to oblanceolate, 3–7 mm long, 0.4–1.3 mm wide, falcate, deeply cleft, lower 3 oblanceolate to obovate, 2–7 mm long, 1–4 mm wide, tube 4–5 mm long, split almost to base, glabrous to minutely pubescent internally; filaments 2.5–5 mm long, anther tube 1–2 mm long, 3 upper anthers with fine acute hairs in a dense patch or in lines towards the top, occasionally also scattered hairs elsewhere, 2 lower anthers with seta 0.2–0.5 mm long and shorter penicillate hairs. Capsule narrowly cylindric or obconical, slightly compressed, 5–15 mm long; seeds ellipsoid, slightly compressed, 0.4–0.5 mm long, light brown, smooth or very faintly striated. Flowers mostly Nov.–Apr.; fruits mostly Dec.–May.