Description from Flora of China
Stems 5-24 cm, puberulent to glabrescent. Leaves opposite or in whorls of 3; petiole to 2 mm; leaf blade oblanceolate to spatulate, 0.7-2.2 cm X 4-8(-12) mm, leathery, adaxially glabrous and drying finely wrinkled, abaxially puberulent, sparsely impressed-punctate, base attenuate to broadly cuneate, margin entire, apex rounded to obtuse, seldom acute; lateral veins invisible. Cymes pseudoterminal, 1-3-flowered; peduncle absent; bracts deciduous. Pedicel 4-10 mm, glabrous to sparsely puberulent. Calyx often tinged red-purple, 4-4.6 mm, 5-lobed from near to above middle; tube 3-4 mm in diam. at mouth; lobes narrowly triangular, 2-2.5 X 0.8-1 mm, outside puberulent. Corolla red, 1.6-2.7 cm, outside sparsely puberulent, inside with short thick hairs near base, without tufts of hairs, mouth slightly to strongly oblique; limb distinctly 2-lipped; adaxial lip nearly erect, 2-2.5 mm; abaxial lip 2-4.5 mm, 3-sect from to near base. Stamens exserted; filaments 0.9-2 cm; anthers coherent in pairs at apex, ca. 1.2 mm; staminode ca. 1 mm. Pistil 1.5-3 cm; ovary glabrous. Style 1.1-1.7 cm, sparsely puberulent. Capsule 4.5-6 cm. Seeds with 1 hairlike appendage at each end, appendages 6-10 mm. Fl. Sep-Jan.
* On trees in forested valleys; 1300-2100 m. Yunnan (Jingdong Xian, Pingbian Xian, Simao Xian).