Daviesia costata Cheel

Scientific Description

Prostrate,spreading or scrambling, shrub, spindly shrub (broom-like). Stems terete, not spiny, glabrous; pustules or glands absent. Leaves or phylloclades clearly present, alternate, not continuous with stem, 25-230 mm long, 2-10 mm wide, glabrous, flat with flat margins; margins entire; tubercles absent; pustules or glands absent. Stipules apparently absent even from the youngest leaves. Pedicel present, 6-10 mm long, glabrous. Bracteoles absent. Calyx 3.5-4.5 mm long, not accrescent, glabrous, ribbed; pustules or glands absent. Corolla 8-10 mm long, multicoloured, red, mostly yellow or orange, with some yellow or orange spots, streaks or blotches; claws present; standard 5.8-6.6 mm long, glabrous, not auriculate, wings 5.4-7 mm long, not auriculate, keel 5.5-7 mm long, beaked, not auriculate, glabrous. Stamens ten; anthers 0.2-0.5 mm long, at two different levels (filaments alternately long and short); filaments free (or united at the very base), 5.4-6 mm long. Ovary sessile or subsessile, glabrous; style 4.5-5 mm long, glabrous, not bearded, terete. Fruit dehiscent (a pod or follicle), 14-16 mm long, 5-7 mm wide, sessile or subsessile, not constricted between the seeds, flat or compressed, glabrous, beaked. Flowers in July, September, October, November and December. Occurs in the South-West Botanical Province, in the Avon Wheatbelt, Jarrah Forest and Swan Coastal Plain IBRA regions.