Herbs, annual, 10-50(-60) cm tall. Stems erect, 3-angular, winged, glabrous, branched. Leaves alternate; petiole 1-4 mm, winged; blade broadly deltoid-ovate, 0.8-2.5 × 0.4-2.5 cm, upper ones smaller and more narrow, abaxially glabrous, adaxially sparsely puberulent, base truncate or shallowly cordate, often decurrent, apex rounded or acute. Flowers solitary, axillary at leaflike bracts, often forming a raceme; bracts narrowly elliptic, shorter than pedicels; pedicels 1-1.5(-2) cm, slender, with 2 bracteoles at base; bracteoles subulate, less than 1 mm, often caducous. Hypanthium campanulate, 1-2 mm, glabrous; calyx lobes longer than hypanthium at anthesis, but shorter than tube after anthesis, subulate, 2-3 mm, entire. Corolla pale purple, 3-5 mm, inside sparsely puberulent; limb 2-lipped, upper lobes erect, linear, less than 1 mm; lower lobes spreading, elliptic to suborbicular, ca. 2 mm. Stamens connate into tube above middle of filaments; anther tube ca. 1 mm, lower 2 anthers barbate at top. Capsule oblong or obovoid-oblong, 4-5 × 2-4 mm. Seeds pale red-brown, ellipsoid, slightly compressed, smooth. Fl. and fr. Jan-Dec.
Anther–tube 0·6–1 mm. long, pubescent at least towards the apex on the back or glabrous; the two lower anthers each with a tuft of hairs and a hyaline appendage at the apex.
Corolla 3·5–5·2 mm. long, pink, pale mauve or pale blue, usually with darker markings, split to 0·4–0·5 mm. from the base on the back, pubescent inside on the bottom of the tube.
Filaments linear, the two lower pubescent below, attached to the corolla–tube at the base.
Hypanthium obovoid to obconical, c. 8–nerved, glabrous.
Calyx–lobes subulate, erect or somewhat spreading, 1·2–3·2 mm. long, entire or rarely with a single tooth at the margin, glabrous or ciliate.
Leaves up to 13–35 x 8–20 mm., ovate to suborbicular, gradually narrowing upwards, acute or obtuse at the apex, gradually or abruptly narrowing below into a petiole–like base, usually rather bluntly and shallowly dentate–crenate, glabrous or rarely pubescent on both sides (not in the FZ–area); venation prominent beneath.
Flowers in lax terminal and axillary leafy racemes; pedicels up to 10–20 mm. long, glabrous or papillose; upper bracts lanceolate to ovate or elliptic, shorter to longer than pedicels; bracteoles 0·2–0·8 mm. long, at or near the base of the pedicel.
Annual erect or ascending herb, 5–25 cm. tall.
Stem sparsely to much branched, triangular and broadly winged, glabrous or rarely pubescent (not in the FZ–area).
Capsule obovoid to narrowly obconical, c. 8–nerved, with 2 valves ± 1 mm. long, inferior part of capsule 2·5–5 mm. long.
Seeds broadly elliptic in outline, compressed, 0·35–0·45 mm. long, finely striate, brown.
Stem sparsely to much branched, triangular and broadly winged, glabrous or rarely pubescent.
Leaves up to 13–35 mm. long, 8–20 mm. wide, ovate to suborbicular, gradually narrowing upwards, acute or obtuse at the apex, gradually or abruptly narrowing below into a petiole-like base, usually rather bluntly and shallowly dentate-crenate, glabrous or rarely pubescent on both sides; venation prominent beneath.
Annual erect or ascending herb 5–25 cm. tall.
Calyx-lobes subulate, erect or somewhat spreading, 1.2–3.2 mm. long, entire or rarely with a single tooth at the margin, glabrous or ciliate.
Flowers in lax terminal and axillary leafy racemes; pedicels up to 10–20 mm. long, glabrous or papillose; upper bracts lanceolate to ovate or elliptic, shorter to longer than pedicels; bracteoles 0.2–0.8 mm. long, at or near the base of the pedicel.
Hypanthium obovoid to obconical, ± 8-nerved, glabrous.
Capsule obovoid to narrowly obconical, ± 8-nerved, with 2 valves ± 1 mm. long, inferior part of capsule 2.5–5 mm. long.
Seeds broadly elliptic in outline, compressed, 0.35–0.45 mm. long, finely striate, brown.
Corolla 3.5–5.2 mm. long, pink, pale mauve or pale blue, usually with darker markings, split to 0.4–0.5 mm. from the base on the back, pubescent inside at the bottom of the tube.
Filaments attached to the corolla-tube at the base, the 2 lower pubescent below.
Anther-tube 0.6–1 mm. long, pubescent at least towards the apex on the back or glabrous; 2 lower anthers each with a tuft of hairs and a hyaline appendage at the apex.
Herbe' annuelle, dressée ou ascendante, de 5-25 cm de haut; tige éparsement à abondamment ramifiée, triangulaire à largement ailée, glabre ou rarement pubescente.' Feuilles' ovales à suborbiculaires, devenant graduellement plus étroites vers le sommet, graduellement ou abruptement rétrécies en un faux pétiole à la base, aiguës ou obtuses au sommet, de 13-35 mm de long et 8-20 mm de large, en général plutôt faiblement crénelées-dentées, glabres ou rarement pubescentes sur les 2 faces, à nervation proéminente en dessous. Racèmes lâches, terminaux et axillaires, feuilles; bractées supérieures lancéolées à ovales ou elliptiques, plus courtes à plus longues que les pédicelles.' Fleurs' à pédicelle de 10-20 mm de long, glabre ou papilleux; bractéoles de 0,2-0,8 mm de long, situées à la base du pédicelle ou près de celle-ci; hypanthium obovoïde à obconique, à environ 8 nervures, glabre; calice à lobes subulés, dressés ou quelque peu étalés, de 1,2-3,2 mm de long, entiers ou rarement à une seule dent marginale, glabres ou ciliés; corolle de 3,5-5,2 mm de long, rose, mauve pâle ou bleu pâle, généralement à taches plus foncées, fendue postérieurement jusqu'à 0,4-0,5 mm de la base, pubescente intérieurement au fond du tube; filets des étamines insérés à la base du tube corollin, les 2 inférieurs pubescents en dessous; anthères en tube de 0,6-1 mm de long, pubescent au moins vers le sommet à l'arrière ou glabre, les 2 anthères inférieures pourvues chacune d'une touffe de poils et d'un appendice hyalin au sommet; ovaire subinfère. Capsules obovoïdes à étroitement obconiques, à environ 8 nervures, à 2 valves d'environ 1 mm de long et à partie inférieure de 2,5-5 mm de long.'Graines largement elliptiques, comprimées, de 0,35-0,45 mm de long, finement striées, brunes.
Forêts claires, bord des routes, parfois sur termitières; à environ 1200 m d'altitude.
Éthiopie, Tanzanie, Zambie; Oman; de l'Inde à l'est de la Chine.
