Gastrolobium triangulare (Benth.) Domin

Scientific Description

Prostrate,spreading or scrambling, shrub, spindly shrub (broom-like). Stems terete, spiny at least in part, glabrous; pustules or glands absent. Leaves or phylloclades clearly present, simple, opposite, not continuous with stem, 12-25 mm long, 10-25 mm wide, glabrous, flat with flat margins; margins entire; tubercles absent; pustules or glands absent. Stipules present and persistent to older leaves. Pedicel present, 2.5-3.5 mm long, glabrous. Bracteoles present but early deciduous. Calyx 4.5-5.6 mm long, not accrescent, glabrous, ribbed; pustules or glands absent. Corolla 9.5-12.5 mm long, multicoloured, mostly yellow, red or orange, with some yellow, red or orange spots, streaks or blotches; claws present; standard 6-11.5 mm long, glabrous, auriculate, wings 8-9.5 mm long, auriculate, keel 8.6-10.5 mm long, not beaked, auriculate, glabrous. Stamens ten; anthers 0.5-0.6 mm long, at two different levels (filaments alternately long and short); filaments free (or united at the very base), 8-10.5 mm long. Ovary stipitate, hairy or glandular; style 9.5-11 mm long, hairy or glandular towards the base, not bearded, terete. Fruit dehiscent (a pod or follicle), stipitate, not constricted between the seeds, round in cross-section, not beaked. Flowers in July, August, September, October and November. Occurs in the South-West Botanical Province, in the Geraldton Sandplains IBRA regions.