Shrubs to 1 m tall. Stems ± 4-angled, sulcate, glabrous. Petiole 3-6 mm, glabrous; leaf blade lanceolate, 9-16 × 4.3-5 cm, glabrous, secondary veins ca. 8 on each side of midvein, base cuneate, margin entire, apex shortly acuminate. Spikes axillary or terminal; rachis 4-angled, unbranched or 2-furcately branched, subglabrous, 1-flowered per node; bracts narrowly triangular, ca. 1.5 mm, abaxially pubescent; bracteoles similar to bracts. Calyx ca. 3 mm, outside pubescent, inside glabrous, 5-lobed almost to base; lobes linear, subequal, apex acute. Corolla ca. 1 cm, outside pubescent; tube slightly longer than limb; lower lip 3-lobed, lobes subequal, ovate, and apex rounded; upper lip subtriangular, erect, apex emarginate. Staminal filaments ca. 4 mm, glabrous; anther thecae unequal, superposed, lower one spurred at base. Ovary and style glabrous. Capsule glabrous. Fl. Apr-May.
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