Root cylindric or fusiform, as thick as a finger. Stem branched from the base; branches prostrate, up to 1/2 ft. long, pubescent; internodes 3–5 lin. long. Leaves ovate-lanceolate to oblong, subobtuse at both ends, up to 7 lin. long, 3–4 lin. broad, entire or sparingly and obscurely dentate, ciliolate, densely covered below with white glands, other wise almost glabrous; petioles very short or hardly any. Calyx 1 1/2 lin. long, hairy, persistent. Corolla purplish with dark purple streaks and spots in the throat, scarcely 1/2 in. long. Fruit 2 1/2–3 lin. long. Seeds rotundate-obtuse at the apex, truncate at the base, 1 1/2 to almost 2 lin. long.