Herbs, or half shrubs, ? glabrous. Leaves ovate to ? deltoid, acute, serrate, the bases rounded, ? truncate, or occasionally oblique, to 3.5 cm long and 2 cm wide, glabrous to rarely sparsely pubescent, slightly resin-dotted; petioles slender, ca 1-4 long. Inflorescences verticils, each ca 4-6-flowered, the bracts ca 5-6 mm long, long-acuminate and deciduous. Flowers with pedicels ca 1-4 mm long, pubescent; calyx tubular, ca 6-7 mm long, bilabiate, the upper lobe entire and 3-veined, the lower lobe 2-toothed and ca 7-veined, sparsely pubescent; corolla tubular, rose, ca 13-15 mm long, naked within, the lips about equal in length, ca 2-2.2 mm long, lightly pubescent near the tip in bud; connectives with a retrorse tooth below the middle, the anthers ca 1 mm long; styles long and slender, bifid, the branches unequal. Nutlets ca 4, oblong-ovate, pale brown, ca 1.5 mm long.
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