Didymocarpus grandidentatus (W. T. Wang) W. T. Wang

Stems 10-25 cm, spreading villous. Leaves opposite; petiole 0.5-10 cm; leaf blade ovate to reniform, 4.5-10 X 4-15 cm, herbaceous, adaxially densely puberulent, eglandular, abaxially puberulent along veins, sparsely red glandular, base cordate, margin coarsely double dentate or serrate to crenate, apex rounded; lateral veins 4-6 on each side of midrib. Cymes ca. 8-flowered; peduncle 4.5-7 cm, glandular puberulent; bracts free, ovate to orbicular-ovate, 5-8 mm, glabrous, margin entire. Pedicel ca. 2 mm. Calyx slightly zygomorphic, ca. 5.5 mm; limb indistinctly 2-lipped, 5-lobed; tube ca. 4.6 mm; lobes nearly equal, triangular, ca. 0.8 mm, glabrous, margin entire, glandular ciliate. Corolla purple-red, ca. 2.4 cm, glabrous; tube cylindric, ca. 1.8 cm X 4 mm; adaxial lip ca. 4 mm; abaxial lip ca. 6 mm. Stamens glabrous; filaments ca. 3.5 mm; anthers ca. 1.8 mm; staminodes 2, ca. 3 mm. Pistil ca. 1.7 cm, glabrous; ovary ca. 1.3 cm. Fruit unknown. Fl. Jun.

S Yunnan (Menghai Xian).

* Valley forests; ca. 1300 m.

Chirita grandidentata W. T. Wang, Acta Phytotax. Sin. 13: 104. 1975.