Shrubs or trees, to 3 m tall. Branchlets gray, with prickles. Young branchlets, inflorescences, leaf rachises, and adaxial surface of leaflet blades with long grayish yellow trichomes. Leaves 5-13-foliolate; petiolules 4-10 mm, winged; leaflet blades alternate or rarely subopposite, ovate to elliptic, asymmetric, 3.5-9 × 2-4 cm, papery, midvein adaxially impressed, secondary veins 10-16 on each side of midvein, base cuneate, margin crenulate or apically crenulate-serrulate, apex caudate. Inflorescences terminal or axillary, thyrsiform; bracts minute. Flowers 4-merous. Perianth in 2 series. Sepals ovate, ca. 0.5 mm, margin ciliolate. Petals long elliptic, 2-3 mm. Female flowers: staminodes ca. 1 mm. Fruit pedicel 7-10 mm, villous; follicles oblique, 5-6 mm, apex beaked. Fl. May, fr. Jul-Aug.
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A shrub or climber. It grows 3 m tall. The small branches are grey and have prickles. The leaves have 5-13 leaflets. The leaflets are alternate and oval. They are unequal on their sides and are 4-9 cm long by 2-4 cm wide. The base is wedge shaped and the edges are wavy. The fruit are 7-10 mm across.
It is a subtropical plant. It grows on hillsides and open forests between 1,500-2,500 m above sea level. In Yunnan.
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