Weak erect or sprawling herbaceous annuals. Stems slender, branching infre-quently, up to about 6 dm. long, usually less, inconspicuously pilosulose to essen-tially glabrous. Leaves opposite, rather sparse, lax and long-petiolate, the blade elliptic to ovate or lanceolate, acuminate, obtuse or somewhat attenuate at the base, rather evenly serrate, up to about 10 cm. long and 5 cm. broad, delicately mem-branaceous, minutely strigillose upon both surfaces, the petiole slender, up to about 3 cm. long, commonly horizontally spreading or somewhat reflexed. Inflorescence terminal, laxly cymose, bearing rather numerous small white shortly pedicellate flowers. Hypanthium subglobose, about 2 mm. broad, minutely and densely hirsutulose, the calyx lobes broadly trigonal, about 1 mm. long; petals broadly oval or obovate, somewhat cucullate, 6-8 mm. long. Stamens and staminodia of the genus, about as long as the petals. Capsules oblongoid, about 4-6 mm. long and 2-4 mm. broad, persistently hirsutulose.
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