Oldenlandia nematocaulis Bremek.

Slender strict annual herb 2–20 cm. tall, with either unbranched or single branched stems with some of the branchlets basal and almost as long as or overtopping the main stem; stems angled, densely to sparsely scabridulous with short papilla-like hairs, particularly on the angles.. Leaf-blades linear to linear-lanceolate, 0.25–2.2 cm. long, 0.1–1.5 mm. wide, acute at the apex, scarcely narrowed at the base, scabridulous-pubescent or glabrous above and scabridulous on margins and midrib beneath, revolute; petiole not developed; stipule-sheath 0.7–2 mm. long, divided into (1–)2–5 filiform pubescent setae 0.5–3.5 mm. long.. Flowers heterostylous, in sessile mostly subglobose 1–many-flowered inflorescences supported by the 2 terminal leaves or sometimes the apical internodes suppressed and lower axillary inflorescences joined with the terminal one and apparently supported by a whorl of 4 leaves, up to 4–9 mm. in diameter in fruit but minute specimens may bear only 1 fruit; pedicels often purplish, 0.2–1.5 mm. long, sometimes papillate.. Calyx-tube ovoid or subglobose, 0.6–0.8 mm. long, scabridulous; lobes often purplish, linear-lanceolate, 1–3 mm. long, mostly 0.1–0.2 mm. wide, probably attaining the maximum length only in fruit, the margins scabridulous-ciliate.. Corolla white, pink, bluish white or pale mauve; tube slender, 2–3.3 mm. long, widened at the throat, upper half hairy inside in short-styled forms, throat densely barbate in long-styled forms; lobes oblong-elliptic, 1–1.5 mm. long, 0.7–0.9 mm. wide.. Filaments exserted 1 mm. in short-styled flowers, included in the throat in long-styled flowers.. Style 2 mm. long in short-styled flowers, the stigma-lobes 0.8 mm. long, 3.3–4.3 mm. long in long-styled flowers, the stigma-lobes 0.3–1 mm. long.. Capsule subglobose to transversely oblate, 0.9–1.8 mm. tall (including the beak), 1.2–1.8 mm. wide, papillate, slightly scabridulous or glabrous, the beak very rounded, scarcely raised or ± 0.5 mm. tall, the persistent calyx-lobes slightly decurrent.. Seeds brown, ellipsoid, 0.25–0.35 mm. long, reticulate, the testa-cells granular.