Small annual herbs 7-30 cm high, simple or branched, glaucous, glabrous, or only the basal nodes puberulous, or the whole plant, including the fruits, puberulous; young parts sometimes hairy. Leaves 1-6 cm long, linear or linear-filiform, simple, ± fleshy, minutely stipulate or exstipulate. Racemes few-to many-flowered. Pedicels ebracteate, puberulous or glabrous, 2 mm long in flower; 2-4 mm long in fruit, stout, erect or erect-spreading. Sepals 2.3-3.6 mm long, 0.9-1.3 mm broad, narrowly oblong to obovate-oblong, semi-persistent, the outer 2 cucullate and ± thickened at the tip; the inner 2 saccate. Petals 3.4-5.5 mm long, 1.4-2.5 mm broad, narrowly obovate to obovate-elliptic, rounded, clawed, occasionally with a very small appendage. Filaments 2-2.9 mm and 2.4-3.5 mm long, each of the short ones occasionally with a small appendage. Anthers 0.5-0.9 mm long. Ovary narrowly oblong, glabrous or puberulous, the stigma subsessile or on a stout style as thick as the ovary; ovules 10-24. Fruits 1.5-3.7 cm long, 1-1.5 mm broad, linear, the margins straight or nearly so; valves 1-nerved or obscurely 3-nerved, flat, bulged by the seeds, glabrous or puberulous; style 1.8-5.5 mm long, swollen, ± obovate or stout sylindric-clavate or cylindrical. Seeds 0.9-1.2 x 0.7-0.8 mm, oblong or subcircular-oblong, immarginate.
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Glabrous or hairy annual, up to 300 mm tall. Leaves sometimes stipulate, linear or filiform, 15-23 mm long, ± fleshy. Flowers small, white, pink or blue, sepals sparsely hairy, petals sometimes with a very small appendage, ovules 10-24. Fruit linear, 15-37 x 1-1.5 mm, margins ± straight, on stout, erect fruiting pedicels, style ± obovate to cylindrical.
Glabrous or hairy annual to 30 cm. Leaves sometimes stipulate, linear or filiform. Flowers white to blue, ovules 10-24. Fruits linear, 15-37 mm long.