Perennial decumbent herbs; stems prostrate. Leaves simple, opposite, shortly petiolate, ovate to elliptic, entire or with a few small scattered teeth, 3-veined; base not or scarcely attenuate. Capitula solitary, axillary, ± sessile, discoid, green and inconspicuous; involucral bracts 2, herbaceous, ovate, strigose; receptacle flat, epaleate. Florets 4, yellow; outer 2 female, subtended by bracts, with corolla 3-or 4-lobed; inner 2 bisexual, with corolla 4-lobed; anther sacs black. Achenes usually derived only from inner florets, obovate, dorsiventrally compressed, with a shallow longitudinal rib on each face, sometimes sparsely and minutely tuberculate on adaxial face, and with 2 broad, longitudinal, lacerate, stramineous corky wings, sparsely pilose at apex and on longitudinal ribs. Pappus of 2 awns fused to wings.
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