裂唇糙苏 lie chun cao su

Stems 20-30 cm tall. Petiole 4.5-14 cm, basal ones persistent, minutely retrorse hispid or puberulent; basal and stem leaf blades broadly ovate to circular-ovate, 2.5-10 × 2.5-7.5 cm, sparsely strigose, base cordate, margin crenate, apex rounded. Verticillasters 1 or 2, (2-)7-9-flowered; floral leaves subsessile, ovate-oblong, 2-6 × 0.7-2.7 cm; bracts few, subulate, 5-8 mm, ciliate at apex, rarely along entire margin. Calyx tubular-campanulate, ca. 1.4 cm × 7 mm, sparsely minutely hispid outside; teeth obliquely triangular, ca. 1.5 mm, margin puberulent, double toothed, apex emarginate, short spinescent, tufted setose inside. Corolla dark purple, ca. 2.6 cm; tube ca. 1.6 cm, puberulent on back outside, pilose annulate, apex sparsely puberulent inside; upper lip ca. 1 × 1.5 cm, densely pilose outside, margin denticulate, densely bearded inside; lower lip ca. 7 × 8 mm, puberulent outside; middle lobe oblate, ca. 5 × 7 mm, margin denticulate; lateral lobes subcircular, ca. 3 mm in diam., margin denticulate. Stamens included; filaments finely pilose, posterior 2 with a slightly reflexed basal appendage. Nutlets glabrous. Fl. Aug.

* Grassy slopes; ca. 3500 m. Yunnan.