Description from Flora of China
Trees, ca. 15 m tall. Branchlets brown, whitish tomentose. Stipules not seen; leaf gland elliptic, close to base of petiole; pinnae 1-3 pairs, ca. 10 cm; leaflets 7-13 pairs per pinna; oblong-falcate, 1.5-2.5 × 0.7-1 cm, both surfaces densely grayish tomentose, main vein eccentric, close to distal margin, base asymmetrically rounded, apex obtuse to shortly attenuate. Peduncles 2 or 3 together, axillary at distal leaves, with dimorphic flowers in corymbs, ca. 3.5 cm in diam.; pedicels to 4 mm. Calyx narrowly campanulate-obconical, ca. 4 mm, hirsute; teeth deltoid, obtuse. Corolla broadly funnel-shaped, ca. 8 mm, tomentose; tube very short, only ca. 2 mm. Staminal tube ca. 4 mm, longer than corolla tube. Ovary fusiform, densely puberulent in distal half, stipitate; style glabrous. Legume and seeds unknown. Fl. Apr-May.
● Forests; ca. 1000 m. Guizhou, Sichuan, NE Yunnan (Qiaojia).