Erect or spreading shrub to 1.5 m tall, glabrescent. Leaves cauline, linear to subulate, entire; lamina 2-6 cm long, 1-3 mm wide. Flowers in loose thyrso-racemes to 15 cm long; scape naked; bracts linear, to 5 mm long; peduncle to 6 cm long; bracteoles linear, to 2 mm long; pedicel to 8 cm long. Sepals linear to deltoid, 2-6 mm long. Corolla 9-15 mm long; lobes unequal, abaxial 6-7 mm long; wings 0.5-1 mm wide. Ovary with septum about 1/2 its length; ovules 12-14; style with white hairs. Fruit a subglobular capsule, 2-3 mm diam. Seeds elliptic, c. 1 mm long.