Annual herbs, erect and branching above, or with several decumbent stems, up to 50 cm high. Stems densely and coarsely hairy, or puberulous in the lower part only, or subglabrous. Leaves 1.5-12 cm long, simple or with 1-5 pairs of lobes, linear or filiform, glabrous, puberulous or densely hairy. Racemes terminal, lax, the rhachis sub-glabrous. Pedicels 3.5-12 mm long in flower, slender, erect, puberulous or sparsely hairy; 0.6-2 cm long in fruit, recurved, spreading or erect. Sepals 2.5-5.8 mm long, 0.8-1.8 mm broad, narrowly oblong, densely pubescent to puberulous, rarely glabrous or densely papillate; outer 2 cucullate; inner 2 saccate. Petals 5.5-11.5 mm long, 3-8 mm broad, oblong-obovate to subcircular-obovate, rounded, clawed, each with an appendage (sometimes very small). Filaments 1.6-3.8 mm and 1.9-4.3 mm long; each of the 2 short ones with an appendage. Anthers 0.8-2 mm long. Ovary linear, glabrous, sometimes becoming densely puberulous at a very early stage; ovules 16-36. Fruits 1.5-5.5 cm long, 0.7.1-5 mm broad, linear, sometimes very slender, moniliform, the 'beads' close together or separated by long, narrow waists, or nearly straight-sided; valves 1-nerved smooth, glabrous or puberulous; style 1-8.8 mm long, bulbous, clavate, cylindrical or stoutly subulate. Seeds 1.2-1.8 x 0.8-1.3 mm, oval; very narrowly margined or 0.8-1.1 x 0.5-0.7 mm, oval-elliptic, immarginate.
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Annual, erect or with several decumbent stems, up to 500 mm tall, ± hairy in lower part. Leaves linear, simple or with 1-5 pairs of lobes, 15-120 mm long. Flowers blue, sepals densely hairy or rarely glabrous, petals basally appendaged, ovules 16-36. Fruit linear, 15-55 x 0.7-1.5 mm, straight-sided or necklace-like, with small or long constrictions between seeds.
Glabrescent to hairy annual to 50 cm. Leaves exstipulate, linear or lobed. Flowers blue, petals with basal appendages, ovules 16-36. Fruits moniliform, 15-55 mm long.
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