Branchlets are quadrangular, glabrous, and vegetative lateral branches are usually deformed into hooks in pairs. The leaves are opposite, papery or membranous, ovoid or ovoid-oblong, ovoid, oval-oblong, 5 ~12cm long and 3 ~ 7cm wide, with a tapered tip, a wedge-shaped base, a bright ventral surface, a powdery white back and tufted hairs in the axils of leaves. 6 ~ 7 pairs of lateral veins; Petiole length 8 ~ 12 mm; Stipules narrowly triangular, entire, 6 ~ 12 mm long, 2-parted, lobes narrowly triangular to triangular lanceolate.

The head is a simple axillary or terminal raceme with a diameter of 2 ~ 2 and 5 cm; The total pedicel is slender, 2 ~ 5 cm long, with several bracts in the middle; Flowers yellow, 5-numbered, nearly pedicellate; Calyx is about 2mm long, covered by small coarse hairs, and calyx lobes are less than1mm; The corolla is saucer-shaped, 6 ~ 7 mm long, and only the corolla lobes are powdery. Capsule is inverted cone, 6 ~10 mm long, 6 ~ 5 mm in diameter, sparsely pilose and nearly sessile. The flowering period is June to July, and the fruiting period is 10- 1 1.