Gastrolobium graniticum (S.Moore) Crisp

Scientific Description

Erect, shrub, spindly shrub (broom-like). Stems terete, not spiny, glabrous; pustules or glands absent. Leaves or phylloclades clearly present, simple, opposite, continuous with stem, 28-75 mm long, 15-35 mm wide, hairy or glabrous, with simple hairs, flat with flat margins; margins entire; tubercles absent; pustules or glands absent. Stipules present and persistent to older leaves. Pedicel present, 2.7-3.5 mm long, hairy. Bracteoles present but early deciduous. Calyx 7-8 mm long, not accrescent, hairy, with simple hairs, ribless; pustules or glands absent. Corolla 11.5-15.5 mm long, multicoloured, mostly yellow, red or orange, with some yellow, red or orange spots, streaks or blotches; claws present; standard 10.5-14.6 mm long, glabrous, auriculate, wings 10-12 mm long, auriculate, keel 10-12.5 mm long, not beaked, auriculate, glabrous. Stamens ten; anthers 0.6-1.2 mm long, at two different levels (filaments alternately long and short); filaments free (or united at the very base), 7.5-13 mm long. Ovary stipitate, hairy or glandular; style 13-13.5 mm long, hairy or glandular towards the base, not bearded, terete. Fruit dehiscent (a pod or follicle), 14-17 mm long, 7-10 mm wide, stipitate, not constricted between the seeds, round in cross-section, glabrous, not beaked. Flowers in August and September. Occurs in the Eremaean and South-West Botanical Province, in the Coolgardie and Avon Wheatbelt IBRA regions. Conservation Code Threatened (T).