Annual viscid erect herb, 40-150 mm tall. Stems few to several from the crown, simple or branching near base, leafy, with thin cobweb-like indumentum, becoming glabrous. Leaves: primary leaves 6.5-10 x 0.5-1 mm, linear-filiform, usually twisted, apex mucronulate, margins involute, abaxial surface with thin cobweb-like indumentum sometimes glabrescent towards apex, adaxial surface white tomentose; secondary leaves similar but much shorter. Heads campanulate, 2.2-2.7 x 0.9-1.5 mm, 3 to few in small leafy clusters in axils of primary leaves, which much exceed them. Involucral bracts 10-11, the outer 2-3 sterile, elliptic to obovate, apex acute or rounded; following 3 subtending female flowers, readily deciduous, elliptic, obovate or trullate, adaxially concave, abaxially keeled, apex acute or rounded; inner 5 surrounding hermaphrodite flowers, persistent, of which outer 2 trullate, adaxially concave, abaxially convex, apex rounded and innermost 3 elliptic, ovate or obovate, flat-tish, apex rounded or obtuse; all bracts translucent pale golden brown, abaxial surface pilose but 3 innermost bracts surrounding hermaphrodite flowers glabrescent. Flowers 4-6; 3 female, corolla filiform, style divided, 2-(3) hermaphrodite, corolla cylindric below, campanulate above, style undivided. Achenes 0.8-1.0 mm long, obovoid with minute clavate hairs, ovaries of hermaphrodite flowers aborted. Pappus absent in female flowers, scanty or absent in hermaphrodite flowers, slender setaceous with shaft naked below, shortly plumose towards tip.
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Subwoody annual, with few to several branches from crown, 40-150 mm tall. Leaves tufted, linear-filiform, usually twisted, margins rolled in, white-tomentose above. Flowerheads disciform, in axillary clusters; involucral bracts pale golden-brown, 3 outer florets filiform and female, 2(3) bisexual florets with sterile ovaries. Cypselas obovoid, minutely hairy; pappus absent in female florets, of bristles with smooth shaft and shortly plumose apex in bisexual florets.
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