The brownish red thorns on the branches are strong and straight, or hooked downward on the leaf shafts and midribs.

The leaves are symmetrical on both sides, the thin side is slightly slanted, the top is tapered to a long tail, thick paper or nearly leathery, hairless, the midrib is sunken on the leaf surface, the oil spot is very small, and it is not easy to see under the enlarged lens; The petiole is 3–10 mm long.

[2][3] The branchlets have no dense needle-like straight spines; the leaflets are broad or narrow and oval, or lanceolate, sometimes nearly round, not more than 6 times their width, and the edges are entire.

In western Sichuan, it is found in broad-leaved mixed forests dominated by thorny bamboo, ke tree, and silk chestnut.

Flowering period from April to May, fruiting period from September to November[2][5] The leaflets are long and narrow, band-lanceolate, 10–20 cm long and 1–2 cm wide, with pointed ends, shallow wavy leaf margins, and distant lateral veins.

It grows in Damiaoshan, Guangxi and is found under dense forests in valleys about 1000 meters above sea level.