Oldenlandia fastigiata Bremek.

Annual or perennial herb with stems mostly branched at the base, erect, straggling or ascending, (6–)15–60 cm. long, ribbed, glabrous or slightly to rarely densely scabridulous on the ribs.. Leaf-blades linear to linear-lanceolate, 1.2–4.5(–6) cm. long, 1–5(–8) mm. wide, acute at the apex, narrowed to the base, entirely glabrous or with very small obscure papilla-like hairs above, particularly when very young, and sometimes on margins and main nerve beneath; petioles not developed; stipule-sheath 1–2 mm. long, scabrid-papillose, bearing 3–5 fimbriae of varying lengths, 0.5–2.5 mm. long.. Flowers isostylous or heterostylous, in 3–7(–10)-flowered sessile or pedunculate axillary cymes or fascicles; peduncle 0–3 cm. long, usually very much shorter than the subtending leaf, typically 1/4 the length; pedicels 1.5–4 mm. long, glabrous or rarely scabridulous.. Calyx-tube subglobose, 0.5–0.8 mm. long, glabrous; lobes narrowly triangular, 1–2 mm. long, scabridulous on the margins, keeled.. Corolla white or tinged blue or lilac-pink; tube 1–1.6 mm. long, the throat densely hairy; lobes ovate-oblong, 0.7–2 mm. long, 0.6 mm. wide, papillate inside.. Style in short-styled flowers 0.6 mm. long, in long-styled flowers 2.8 mm. long, in isostylous flowers 0.6–1.2 mm. long; stigma-lobes 0.3–1 mm. long.. Capsule depressed globose, 1–2 mm. tall, 1.5–2.5 mm. wide, glabrous, the beak scarcely raised.. Seeds pale brown, bluntly conical, angular, ± 0.2 mm. long, strongly reticulate.