Herbs annual, 10-40 cm tall. Stem branching from base, densely furfuraceous hairy, sparsely sinuate pilose; branches dense, spreading or slightly flexuous, white, slender. Leaves terete, 5-10 × 1-1.5 mm, usually early deciduous, base slightly expanded and recurved, apex obtuse. Flowers solitary, borne throughout plant; bracts broadly lanceolate; bractlets broadly triangular, margin membranous, apex acute. Perianth (including wings) 8-10 mm in diam. in fruit; segments lanceolate, abaxially winged from middle in fruit, furfuraceous hairy and pilose; portion of segment above wing connivent with others, tightly appressed to utricle, lanceolate, subfleshy, hairy; wing with a space between wings of adjacent segments, yellow-brown, obovate or rhomboid, pellucid, subpapery, several veined. Anthers free from base to apex; anther appendage ovate. Stigmas linear, apex obtuse. Seed horizontal. Fl. Jul-Aug, fr. Sep-Oct.
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