Plants perennial. Stems 20-25 cm, slender, ascending or erect, ± densely white puberulent, nodes white ciliate. Petiole 1.5-2.5 mm; stem leaf blade ovate to rhombic-ovate, 9-12 × 7-10 mm, base cuneate, margin incised-serrate, apex acute, with dense, white puberulent hairs and yellowish glands. Verticillasters many flowered, in long pedunculate spikes; spikes 2.5-4.5 × ca. 1.5 cm, terminal, and cylindric; bracts narrowly ovate, 8 × 2 mm; bracteoles linear, ca. 6 × less than 1 mm, margin ciliate, apex spiny. Calyx tubular-campanulate, puberulent, ca. 7.5 mm, tube ca. 2.5 mm, throat oblique; teeth 5, linear-lanceolate, margin ciliate, posterior teeth slightly longer. Corolla reddish, ca. 1.1 cm, slightly puberulent outside; tube much exserted, gradually dilated into throat, to 2 mm wide; upper lip ca. 1.5 mm, 2-lobed to 2/3 its length. Fl. Jun-Jul.
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