片马党参 pian ma dang shen

Stems decumbent or climbing, 80-120 cm, branched, subglabrous. Leaves alternate; petiole 0.8-3.5 cm; blade ovate-deltoid, 2-5.5 × 1.5-4 cm, abaxially sparsely or densely puberulent, adaxially sparsely puberulent, base cuneate or obtuse, margin irregularly serrate, apex acuminate; leaves on branches smaller. Flowers solitary and terminal; pedicels 1-6.5 cm. Calyx adnate to ovary up to middle, semiglobose, puberulent; lobes ovate-deltoid, ca. 12 × 8 mm, margin repand, apex acute; sinus between lobes acute. Corolla yellow, with purple-blue spots inside, tubular-campanulate, ca. 17 × 10 mm, outside densely puberulent; lobes triangular. Filaments dilated at base, ca. 7 mm, densely villous; anthers oblong, ca. 4.5 mm, abaxially densely puberulent. Ovary semi-inferior. Fl. Jul.

● Grassy slopes with shrubs; ca. 3500 m. W Yunnan (Lushui).