Erect or spreading, simple or branched slender annuals, 5-1 3 cm high; stems winged, glabrous. Leaves verticillate, often in whorls of 4-5, the uppermost some- times in 2's or 3's, lanceolate or lance-elliptic, 7-9 mm long, 2.7-7 mm wide, the lowermost usually ovate or orbicular-obovate, 7-9 mm long, 4.5-5 mm wide, cuspidate apically, attenuate basally, 1-nerved, the margins entire or rarely re-motely crenate, glabrous, glandular-punctate; petioles less than 1 mm long. Ra-cemes cylindric, loosely flowered, 4-22 mm long, 4-6 mm wide, the axis to 3.5 cm long; bracts deciduous, lanceolate, subulate, glabrous, 0.5-0.7 mm long. Flowers purple, the pedicels 0.4-0.7 mm long; outer sepals sometimes ciliolate, with 2 large glands on the back, the largest sepal ovate to orbicular-ovate, obtuse, 1-2 mm long, the smaller 2 oblong, obtuse, 0.7-0.9 mm long; wings elliptic to obovate, rounded apically, cuneate basally, glabrous, gland-dotted, 1.6-1.8 mm long, 1 mm wide; upper petals 1.8-2 mm long, triangular-ovate to rhombic-ovate, obtuse; keel 1.4-1.6 mm long with 2 large glands apically, the crest 6-lobed, the lobes 0.4-0.7 mm long; staminal tube glabrous inside, the filaments,0.1-0.3 mm long; ovary oblong or ovoid, 0.3-0.5 mm long, 0.3-0.4 mm wide, gland-dotted, the style ascending, 0.2-0.3 mm long, developed distally into a navicular cavity, the apical end of which has a tuft of hairs, the inner end a globose, sessile stigma. Capsules broadly ellipsoid, 1.2-1.4 mm long, 1-1.2 mm wide, gland-dotted; seeds (Fig. lb) oblong, 1-1.2 mm long, appressed-pilose; aril with the 2 lobes oblong, appressed, 0.5-0.7 mm long.
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