Slender, erect annuals, simple or slightly branched, 7-50 cm high; stems wing-angled, glabrous. Leaves subverticillate at the base of the stem, the others alternate, linear to linear-lanceolate, mucronate or acute apically, cuneate basally, 1-nerved, the margins slightly revolute, glabrous, 6-12 mm long, 0.5-1.2 mm wide, sessile. Racemes very dense, cylindric or cylindric-ovoid, slightly comose apically, 1-2.6 cm long, 6.5-12 mm wide, the peduncle to 5 cm long; bracts linear-lanceolate, acuminate-subulate, usually carinate, ciliolate basally, glabrescent toward the apex, 2-3 mm long. Flowers white or greenish-white, tinted pink or lavender, subsessile; sepals elliptic-oblong to ovate, subacute, occasionally with a ridge along the costa on the dorsal side, then. ,usually appearing carinate, 1.7-2.2 mm long; wings oval, sometimes suborbicular, rounded apically, cuneate-rounded basally, sometimes with a ridge along the costa on the dorsal side, then usually appearing concave, 5-7-nerved, 4.3-5 mm long, 3-3.8 mm wide; upper petals oval or obovate-oblong, rounded apically, ca equaling the keel; keel 2.5-3 mm long, the crest irregularly trilobate on each side; staminal tube glabrous inside, the filaments 0.4-0.6 mm long; ovary ovoid to orbicular, 0.5-1.3 mm long, 0.4-0.7 mm wide, the style ascendent, 0.5-1 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 suborbicular, 1.5-1.9 mm long, 1.4-1.9 mm wide; seeds (Fig. le) ellipsoid, 1.7-1.9 mm long, sparsely short-pubescent; aril corneous above, the 2 lobes narrowly and obliquely oblong, appressed, 0.9-1.6 mm long, glabrous.
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