Gastrolobium grandiflorum F.Muell.
Wallflower Poison

Scientific Description

Erect, shrub, spindly shrub (broom-like). Stems terete, not spiny, hairy; pustules or glands absent. Leaves or phylloclades clearly present, simple, opposite or whorled, not continuous with stem, 27-90 mm long, 8-35 mm wide, hairy, with simple hairs, flat with flat margins; margins entire; tubercles absent; pustules or glands absent. Stipules present and persistent to older leaves. Pedicel present, 3.5-8 mm long, hairy. Bracteoles present but early deciduous. Calyx 6.5-12 mm long, not accrescent, hairy, with simple hairs, ribless; pustules or glands absent. Corolla 16-20 mm long, multicoloured, mostly red or orange, with some red or orange spots, streaks or blotches; claws present; standard 15-18 mm long, glabrous, auriculate, wings 15-18 mm long, auriculate, keel 15-18 mm long, not beaked, auriculate, glabrous. Stamens ten; anthers 1.4-1.5 mm long, at two different levels (filaments alternately long and short); filaments free (or united at the very base), 7-20 mm long. Ovary stipitate, hairy or glandular; style 17-20 mm long, hairy or glandular towards the base, not bearded, terete. Fruit dehiscent (a pod or follicle), 12-16 mm long, 5-7 mm wide, stipitate, not constricted between the seeds, round in cross-section, hairy, with simple hairs, not beaked. Flowers in February, March, April, May, June, July and August. Occurs in the Northern and Eremaean Botanical Province, in the Pilbara, Little Sandy Desert, Central Kimberley and Tanami IBRA regions.