16. Chirita eburnea Hance, J. Bot. 21: 168. 1883.
牛耳朵 niu er duo
Chirita fauriei Franchet; Didymocarpus eburneus (Hance) H. Léveillé; D. fauriei (Franchet) H. Léveillé; Roettlera eburnea (Hance) Kuntze.
Perennials, stemless. Rhizome internodes inconspicuous. Leaves basal, opposite; petiole 1-8 X 0.5-1 cm; leaf blade ovate to elliptic or obovate, 3.5-17 X 2-9.5 cm, papery, appressed puberulent to pilose, eglandular, base attenuate to broadly cuneate, margin entire, apex acute; lateral veins 4 or 5 on each side of midrib, inconspicuous. Cymes (1 or)2-13(-17)-flowered; peduncle 4-30 cm, puberulent; bracts 2, free, ovate to orbicular-ovate, 1-4.5 X 0.8-2.8 cm, densely puberulent, margin entire, apex acute to obtuse. Pedicel to 2.3 cm, puberulent and glandular puberulent. Calyx 5-sect from base; segments equal, narrowly lanceolate, (3-)7-10 X (1-)2-2.5 mm, outside puberulent and glandular puberulent, inside sparsely puberulent, margin entire, apex acute. Corolla purple to white or yellow, 3-4.5 cm, sparsely puberulent; tube nearly tubular, ca. 3 X 1-1.4 cm; adaxial lip 5-9 mm; abaxial lip 1.2-1.8 cm. Filaments 9-10 mm, sparsely puberulent basally; anthers fused by entire adaxial surfaces, 3-5 mm, nearly glabrous; staminodes 2, 4-6 mm. Pistil 2.2-3 cm, densely puberulent; ovary ca. 2 cm. Stigma cuneate, ca. 3 mm, 2-lobed. Capsule erect, 4-8 cm. Fl. Apr-Sep, fr. May-Oct.
* Rocks in forests or along streamsides in forests on limestone hills; near sea level to 1900 m. N Guangdong, N Guangxi, Guizhou, W Hubei, SE and W Hunan, E and S Sichuan.