Lobelia baumannii Engl.

Perennial procumbent or straggling, rarely erect, herb up to 70 cm. long, often rooting at lower nodes.. Stems ribbed or narrowly winged, ± pubescent.. Leaves with the lamina narrowly to very broadly ovate or triangular, up to 25–80 mm. long and 15–50 mm. wide, acute to acuminate at the apex, cuneate or truncate to subcordate at the base, ± pubescent on both sides but mainly on the nerves; petiole up to 15–30 mm. long; leaf-margin coarsely dentate or serrate; venation prominent, particularly beneath.. Flowers in lax, 2–6(–12)-flowered, shortly pedunculate racemes; pedicels up to 5–12 mm. long, ± pubescent; bracts linear, 2–7.5 mm. long, sometimes broadest above the middle; bracteoles usually near the base of the pedicel, linear, up to 1.5 mm. long, often broadened at the tip.. Hypanthium narrowly to broadly obconical, 8–10-nerved, sparsely appressed pubescent in the lower part to spreading pubescent all over.. Calyx-lobes narrowly triangular or linear, sometimes broadest above the middle, often ± recurved, 2.5–7.5 mm. long, ciliate and often with a few hairs also on the midvein, somewhat gibbous at the base.. Corolla 13–30 mm. long, white, mauve, or blue with darker markings in throat, with 2 longitudinal crests in the mouth of the tube, split to the base on the back, glabrous or ± pubescent on the lobes outside, puberulous inside on the bottom of the tube.. Filaments pubescent below except sometimes for the upper one, puberulous inside at the top, connate or almost free above, attached to corolla-tube at the base.. Anther-tube 2–3 mm. long, all anthers penicillate at the apex, otherwise glabrous or sparsely pubescent on the connectives outside.. Ovary subinferior to semi-inferior.. Capsule 8–10-nerved, ± pubescent, with 2 valves 2.5–4 mm. long, inferior part of capsule 4–10 mm. long.. Seeds elliptic-oblong to broadly elliptic in outline, somewhat compressed, 0.9–1.2 mm. long, distinctly reticulate, pale brown.