Ascending, erect, annual herb or undershrub with stellate, pubescence; leaves more or lesshairy, ovate, base subcordate, margin serrate, apex acute, 3-5 nerved; petioles slender, hairy; stipules linear-subulate, shorter than petiole; peduncles opposite the leaves; flowers 2-3, small, yellow; sepals-5, linear-oblong, apiculate; petals-5, spathulate, without glands, longer than sepals; stamens numerous or twice as the petals, free or springing from a short, contracted torus; ovary 2-6 celled; style short; stigma capitate; capsules solitary or paired, elongate, 6-angled, 3 of the angles winged, truncate, beak 3-fid, sometimes 2-fid, septa between the seeds nearly obsolete or well marked; seeds numerous, dark brown.