Shrubs 40-100 cm tall. Stems terete, glabrous; bark straw-yellow. Petiole 0.5-1.5 cm; leaf blade elliptic-orbicular, oblong, ovate, or rarely lanceolate-elliptic, 5-11.5 × 2-3.5 cm, both surfaces glabrous, secondary veins 5-7 on each side of midvein, base broadly cuneate to rounded, margin entire or inconspicuously undulate, apex shortly acuminate to caudate. Racemes terminal or rarely in apical leaf axils, to 30 cm; bracts narrowly triangular, 2-3 mm; bracteoles 1-2 mm. Pedicel 0-3 mm. Calyx ca. 5 mm; lobes linear-lanceolate, apex acuminate. Corolla white or pink and with red spots on lobes of lower lips, ca. 4 cm, pilose; tube basally ca. 1.5 mm wide for ca. 3 cm; lower lip 3-lobed, lobes narrowly elliptic, ca. 10 × 4 mm, and apex obtuse; upper lip 2-lobed, lobes elliptic, ca. 10 × 6 mm, and apex obtuse. Stamens 2; filaments ca. 2 mm; anther thecae oblong, ca. 1.5 mm; staminodes ca. 1.3 mm. Ovary pilose; style ca. 3 cm, slightly pubescent; stigma slightly 2-cleft. Capsule clavate, 1.9-2 cm, pubescent. Seeds broadly ovate in outline, ca. 3.5 mm, tuberculate-punctate. Fl. Jun-Aug, fr. Sep.
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