Description

Key Characters:

Growth Form: Climbers, woody, to 10 m tall.

Stems: Bark blackish, with few recurved prickles.

Roots:

Leaves: Leaves compound. Alternate. Leaves 20-30 cm; rachis with blackish re­curved prickles; pinnae 2 or 3(or 4) pairs, opposite; leaflets 4-6 pairs, opposite, with short petiolules, adaxially shiny, ovate or elliptic, 3-6 × 1.5-3 cm. Leaflet bases broadly cuneate or obtuse. Surfaces glabrous; blade leathery. Leaflet apex obtuse-rounded, sometimes emarginate, rarely acute. Petiolate. Stipules present.

Flowers: Racemes 10-20 cm, arranged in ter­minal, lax, large panicles. Flowers perfect, fragrant; pedicels 5-15 mm, slender. Sepals 5, lanceolate, ca. 6 mm, glabrous. Petals unequal: 4 yellow, ovate, glabrous, slightly conspicuously shortly clawed; upper one tinged with red stripes, attenuate to claw, inside hairy at central part. Stamens slightly extended; filaments inflated and hairy at base. Ovary superior, hairy; ovules 2.

Fruit: Legume obliquely ovoid; 3-4 × 2-3 cm; swollen; leathery; reticulate; apex beaked. Seeds solitary; compressed.

Ploidy:

Habitat:

Elevation Range: