Lateral roots fusiform. Rhizome woody. Stems erect, 50-80 cm tall, slender, mostly glabrous, stellate puberulent apically and on nodes. Petiole 1-7 mm; stem leaf blades elliptic to ovate-lanceolate, 7-12.5 × (3-)5-6.5(-8) cm, adaxially simple hairy or stellate hispid and hairs with very long central arms, abaxially very sparsely stellate pubescent, base slightly unequally rounded to shallowly cordate, margin coarsely dentate, apex acuminate. Verticillasters (6-)8-14 (-34)-flowered; floral leaves with petiole less than 1 cm, blade 2-4.5 × 1-3 cm; bracts 2-15 × 1-2(-5) mm, sparsely stellate ciliate, margin pubescent. Pedicel to 2 mm. Calyx tubular, ca. 1.1 × 5.5 mm, densely stellate tomentulose outside; lobes double toothed, spines slightly hooked, 2.5-3 mm; teeth triangular, tufted hairy inside. Corolla white or purplish, ca. 1.9 cm; tube ca. 1.1 cm, glabrous except for pubescent outside of apex back, pilose annulate inside; upper lip obovate, ca. 8 × 7.5 mm, margin denticulate, densely silky villous outside, bearded inside; lower lip ca. 8 × 9 mm, middle lobe obovate ca. 6 × 4 mm; lateral lobes ovate to oblong, ca. 4 mm. Stamens included; filaments hairy, posterior 2 with a hooked basal appendage. Nutlets glabrous. Fl. Jul-Aug, fr. Aug-Oct.

* Thickets, grassy slopes; 1300-3200 m. Sichuan.