Shrubs or woody climbers, to 1.5 m tall or long. Branchlets and leaf rachises with prickles. Older branchlets brownish black, rugulose, pubescent. Leaf rachises, inflorescences, and petiolules pubescent. Leaves 5-9-foliolate; petiolules 2-5 mm; leaflet blades subopposite to alternate, ovate to elliptic, 6-8 × 2.5-3.5 cm, subleathery, abaxially pubescent, midvein adaxially plane or apically impressed and puberulent, secondary veins 10-13 on each side of midvein, base rounded, margin entire, apex mucronate to acuminate. Infructescences axillary, 3-4 cm. Fruit pedicel 6-10 mm; fruit 4-carpelled, usually only 2 or 3 carpels developing; follicles dark brownish black when dry, 7-8 mm in diam., pubescent when young but perhaps only on undeveloped carpels, oil glands inconspicuous, apex beaked. Seeds 5-6 mm in diam. Fr. Aug-Sep.
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