Prostrate, much branched, more or less tomentose with shorter and longer hairs intermixed; leaves 3-nate (or 3-4-nate, Bentham), from subpatent to squarrose, rather close-set, incurved or straight, linear, obtuse, sulcate, thick, puberulous or subglabrous, ciliate or naked, pale green, 1-2 lin. long; flowers fasciculate-racemose, 3-nate; pedicels puberulous, 1-1 1/2 lin. long; bracts remote, two small, one larger and foliaceous; sepals from an ovate base, sulcate-keeled, and foliaceous in the upper part, thick, ciliate, subglabrous, 1-1 1/4 lin. long; corolla suburceolate, mouth not (or very slightly) contracted, puberulous, white, 1 1/2 lin. long; limb erect, 1/2 to 1/4 the length of the tube, sinuses sometimes rounded; filaments slender, straight; anthers subincluded, oblong, obtuse or subacute, a little over 1/2 lin. long, cristate; crests with a lacerate margin or subaristate and closely ciliolate, about 1/2 the length of the cell; style exserted; stigma capitate; ovary sparingly villous.
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Erect shrublet to 30 cm. Flowers small, urn-shaped, white, hairy.