Gyrocheilos chorisepalum W.T.Wang

Petiole 3-8 cm, spreading pubescent, hairs 0.7-1.5 mm; leaf blade nearly orbicular to reniform, 3-9.5 X 3-10 cm, adaxially with mixed hairs 0.2-0.3 mm and 0.8-2.5 mm, abaxially sparsely pubescent, margin double dentate to deeply crenate, apex rounded. Peduncle 7-23 cm, pubescent, hairs 0.5-1.2 mm; bracts 4-6 X 3-4 mm, margin entire. Pedicel glabrous. Calyx 3-4 mm, 5-sect or 2-4-lobed; tube absent or 1-2 mm; segments equal to unequal, lanceolate-linear to obovate-oblong, 1-3 mm wide, outside sparsely pubescent near apex. Corolla reddish, ca. 1.2 cm; tube ca. 6 mm; adaxial lip semi-orbicular, ca. 2.8 mm; abaxial lip ca. 6 mm. Stamens adnate to corolla ca. 2 mm above base; filaments ca. 3 mm; anthers ca. 2.5 mm; staminodes adnate to corolla ca. 2.5 mm above base, 0.8-0.9 mm. Pistil ca. 1.1 cm, glabrous; ovary ca. 5 mm. Capsule 2-3 cm. Fl. Apr-May, fr. Jul.