Gastrolobium rhombifolium G.Chandler & Crisp

Scientific Description

Erect, shrub, spindly shrub (broom-like). Stems angular, spiny at least in part, hairy; pustules or glands absent. Leaves or phylloclades clearly present, simple, whorled, continuous with stem, 20-45 mm long, 5-35 mm wide, glabrous, flat with flat margins or flat with incurved margins (conduplicate); margins lobed; tubercles absent; pustules or glands absent. Stipules present and persistent to older leaves, 4-5.5 mm long. Pedicel present, 2.5-3 mm long, hairy. Bracteoles present but early deciduous. Calyx 6-7.5 mm long, not accrescent, hairy, with simple hairs, ribless; pustules or glands absent. Corolla 10-13 mm long, multicoloured, mostly yellow or red, with some yellow or red spots, streaks or blotches; claws present; standard 9-11 mm long, glabrous, auriculate, wings 7.7-10.5 mm long, auriculate, keel 8-9.5 mm long, not beaked, auriculate, glabrous. Stamens ten; anthers 0.8-1.2 mm long, at two different levels (filaments alternately long and short); filaments free (or united at the very base), 6.4-9.2 mm long. Ovary stipitate, hairy or glandular; style 9-10 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 September. Occurs in the South-West Botanical Province, in the Avon Wheatbelt and Jarrah Forest IBRA regions.