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Herb 1—1.25 m. Stems vigorous, glandular-pubescent. Stipular thorns minute (some petioles without) to 4 mm long, sharp, recurved. Leaves much reduced towards the inflorescence; leaflets 5-7, herbaceous, lanceolate, slightly webbed at the base, sparsely glandular-hairy, central leaflet largest, 6-8(-10) by 1.75-2.25(-3) cm; base cuneate, decurrent, top attenuate, acute, mucronate; nerves 10-15 pairs; petiole c. 5-10 cm, sometimes with scattered prickles as the midrib beneath. Racemes up to 40 cm. Flowers subtended by sub-sessile, ovate-oblong, sparsely glandular-hairy bracts, gradually diminishing in size from 2 to 0.5 cm. Pedicels 2-3 cm, short glandular-hairy. Buds cylindrical, c. 2.75 cm by 4 mm, glabrous; petals imbricate, androgynophore with the base of the stamens bulging out at the anterior side shortly before anthesis. Sepals patent, narrow-triangular, (4-)6-7 mm, glandular-hairy outside. Petals glabrous, on a filiform claw (5-)10-12 mm, blade oblong, ± asymmetrical, 10-17 by 4-6 mm, with cuneate base and rounded top. Stamens 6; androgynophore 1-2 mm, glabrous; filaments filiform, 3.5-4 cm; anthers linear, 7-8 mm. Gynophore glabrous, in flower c. 4 cm, in fruit to 5.5 cm; ovary linear, c. 4 mm, glabrous. Fruits patent, cylindrical, blunt at both ends, 5.5-6.5 cm by 4 mm, valves finely and densely nerved. Seeds asymmetrical, 2 mm diam., almost smooth, concentric and cross ribs subprominent; elaiosome not present.
A small herb. It grows 60-90 cm high. It spreads 1.2 m wide. The stems are slender. It has prickly stems. The leaves are large. They have 5-7 lobes. The flowers are pink to white or purple. They are in clusters at the top of the plant.
Much-branched erect herb, up to 3–5 ft.
Flowers white to pink.
