Much-branched, stiff, ascending herb, to 40 cm tall, glabrous or with sparse, simple hairs; stems reddish or brownish, often hairy at base, green and glabrous above. Cauline leaves terete or linear, involute; lamina 4-10 cm long, c. 1 mm wide. Flowers in racemes to 15 cm long, or subumbels; bracts leaf-like; pedicel 8-30 mm long, articulate; bracteoles absent. Sepals lanceolate to narrowly elliptic, 1.5-3 mm long. Corolla 10-12 mm long, hairy outside and inside, without enations, auriculate; abaxial lobes 4-5 mm long; wings 0.5-1.8 mm wide, narrower above auricle. Indusium depressed-obovate, 1.5-1.8 mm long. Ovules 20-25. Fruit globular to ovoid, ±compressed, c. 6 mm diam. Seeds orbicular, 4-6 mm diam., transverse, colliculate, yellow-brown; wing 1-1.5 mm wide, yellowish.
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