Swainsona rotunda Joy Thomps.

Scientific Description

Prostrate,spreading or scrambling, herb. Stems terete, not spiny, hairy; pustules or glands absent. Leaves or phylloclades clearly present, compound, alternate, continuous with stem, 11-20 mm long, hairy, with simple hairs, flat with flat margins; margins entire; tubercles absent, leaflets 5, pinnately arranged, terminal leaflet present, stalked; pustules or glands absent. Stipules present and persistent to older leaves, 3 mm long, without glands, ribless. Pedicel present, 1 mm long, hairy. Bracteoles present and persistent. Calyx 2.7 mm long, not accrescent, hairy, with simple hairs, ribless; pustules or glands absent. Corolla 6 mm long, multicoloured, mostly purple or blue, with some purple or blue spots, streaks or blotches; claws present; standard 4.5 mm long, glabrous, not auriculate, wings 4.2 mm long, auriculate, keel 5.5 mm long, not beaked, auriculate, glabrous. Stamens ten; anthers 0.2 mm long, at two different levels (filaments alternately long and short); filaments united in an open sheath with one free stamen, 3-3.6 mm long. Ovary stipitate, hairy or glandular; style 4.8 mm long, hairy or glandular towards the base, bearded (with a tuft of hairs at apex), flattened at apex. Fruit dehiscent (a pod or follicle), stipitate, not constricted between the seeds, round in cross-section. Flowers in August. Occurs in the Eremaean Botanical Province, in the Gascoyne and Murchison IBRA regions.