Plants perennial. Stems slender, ascending to suberect, to 20-40 cm, floccose-villous especially toward apex, unbranched. Petiole of basal leaves ca. 1.5-2 × as long as blades, to 10 cm, obsolete in upper leaves; leaf blade triangular-ovate, 2.5-5 × 1-3 cm, adaxially sparsely strigose, abaxially floccose-villous, glabrescent, base cordate to subhastate, margin serrate-crenate or double serrate-crenate, apex obtuse to acute. Verticillasters 2-flowered, widely spaced, in racemes or panicles to 15 cm; rachis densely villous, finely glandular pilose; bracts lanceolate-ovate to ovate, 1-4 × 2-3.5 mm. Pedicel 3-5 mm, densely villous, finely glandular pilose. Calyx campanulate, 6-7 mm, villous, finely glandular pilose; upper lip semicircular, margin ciliolate, apex mucronate; lower lip slightly longer, 2-cleft; teeth triangular, apex acute. Corolla purple, white spotted on upper lip, ca. 2 cm, finely pilose; tube finely pilose annulate inside, ca. 1.5 cm, base narrow, exserted, equally dilated at apex, ca. 8 mm wide at throat; upper lip subcircular, ca. 4 × 4 mm; lateral lobes less than 2 mm wide. Filaments ca. 5 mm; connectives arcuate, ca. 3 mm, arms subequal. Style slightly exserted. Nutlets unknown. Fl. Jul.
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