Chirita macrosiphon Hance, Ann. Sci. Nat. Bot., ser. 5, 5: 231. 1866; Didissandra aurea (Dunn) B. L. Burtt; Loxostigma aureum Dunn; Didymocarpus microsiphon (Hance) H. Léveillé; Roettlera macrosiphon (Hance) Kuntze.

Herbs. Stems to 30 cm, densely villous to woolly. Leaves mostly spread along stem, equal to unequal in a pair; petiole 0.5-6 cm; leaf blade ovate to broadly ovate, rarely elliptic or obovate, 5-17 X 3-8(-10.8) cm, villous to pubescent, base oblique, broadly cuneate to subcordate, margin serrate to serrulate, apex obtuse to acuminate. Cymes 1-3-flowered; peduncle 1.5-4.3 cm, villous, glabrescent; bracts 2, persistent, lanceolate to oblong or oblanceolate, 2.5-4 X ca. 1 mm, margin entire. Calyx 7-10 mm, 5-sect from near base; segments narrowly lanceolate, 6-9 X 1-1.5 mm. Corolla orange-red to yellow, 5.5-7 cm; tube 4-4.5 cm; adaxial lip 0.8-1.5 cm; abaxial lip 1.2-2.5 cm. Adaxial stamens 1.1-1.3 cm, abaxial ones 1.4-1.6 cm; anther thecae confluent; staminode absent. Pistil 4-5 cm, glabrous. Style 2.2-2.5 cm; stigmas oblong, 1.5-2 mm. Capsule 3-5 cm. Fl. Jul-Aug, fr. Aug-Oct.

* Shady and damp rocks under forests; 200-800 m. SW Guangdong, SE Guangxi.