少花鼠尾草 shao hua shu wei cao

Plants perennial. Roots sometimes dilated. Stems 2-4, slender, ascending or suberect, unbranched, with widely spaced leaves, densely villous or glabrescent. Petiole 2-2.5 × as long as blades, shorter to obsolete in upper leaves; leaf blade broadly ovate to ovate-triangular, 2.5-6(-7) × 1.2-5 cm, hispid or strigose, rusty, brown glandular, base cordate to hastate, margin crenate, apex acute or obtuse to rounded. Inflorescences spreading brown villous, glandular pilose; verticillasters 2-flowered, widely spaced, in racemes or panicles 2-8 cm; lower bracts leaflike, upper ones ovate, shorter than calyx, slightly strigose, ciliate. Pedicel ca. 2 mm. Calyx campanulate, 5-7 mm, glandular pilose; upper lip ± semicircular, entire, apex acute; lower lip slightly longer than adaxial, teeth ovate-triangular, apex subacute. Corolla purplish red or purple-white, rarely purplish, white spotted on lower lip, 1.3-2 cm or rarely more, sparsely pilose or subglabrous; tube fine pilose annulate inside, gradually dilated at apex, slightly curved upward, 1-1.4 cm, ca. 6 mm wide at throat; upper lip subcircular, ca. 5.5 × 5 mm, emarginate; middle lobe of lower lip flabellate, ca. 3 × 5.5 mm, undulate; lateral lobes ± semicircular, ca. 2.5 mm wide. Filaments ca. 4 mm; connectives ca. 4 mm, arcuate, arms subequal. Style slightly exserted. Nutlets unknown.

* Forest margins, forests; 2800-3400 m. Yunnan.