Jacksonia aculeata W.Fitzg.

Scientific Description

Prostrate,spreading or scrambling, shrub, spindly shrub (broom-like). Stems terete, spiny at least in part, hairy; pustules or glands absent. Leaves or phylloclades absent or apparently so (reduced to scales), alternate, not continuous with stem, hairy, with simple hairs, flat with flat margins; margins entire; tubercles absent, 1(-3); pustules or glands absent. Stipules apparently absent even from the youngest leaves. Pedicel present, 1-2 mm long, hairy. Bracteoles present and persistent, 0.5-1.5 mm long, hairy, not striate. Calyx 4.6-5 mm long, not accrescent, hairy, with simple hairs, ribless; pustules or glands absent. Corolla 5-5.5 mm long, multicoloured, mostly yellow or orange, with some yellow or orange spots, streaks or blotches; claws present; standard 4.2-5 mm long, glabrous, not auriculate, wings 4-4.3 mm long, not auriculate, keel 4.3 mm long, not beaked, not auriculate, glabrous. Stamens ten; anthers 0.3 mm long, at two different levels (filaments alternately long and short); filaments free (or united at the very base), 2-2.5 mm long. Ovary hairy or glandular; style 3.5-4 mm long, hairy or glandular towards the base, not bearded, terete. Fruit dehiscent (a pod or follicle), stipitate or sessile or subsessile, not constricted between the seeds, round in cross-section, not beaked. Flowers in April, May, June, July, August, September and October. Occurs in the Northern and Eremaean Botanical Province, in the Great Sandy Desert, Pilbara, Little Sandy Desert, Ord-Victorian-Plain, Tanami and Dampierland IBRA regions.