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Gastrolobium microcarpum (Meisn.) Benth.
Sandplain Poison

Reference
Fl.Austral. 2:104 (1864)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Erect, bushy shrub, to 2.5 m high. Fl. orange&yellow&red&white, Aug to Oct. Well-drained sandy loam or sand over granite or laterite. Lateritic ridges, breakaways, flats.

Amanda Spooner, Descriptive Catalogue, 9 December 2003
Image

Scientific Description

Erect, shrub, spindly shrub (broom-like). Stems terete, spiny at least in part, hairy; pustules or glands absent. Leaves or phylloclades clearly present, simple, opposite, continuous with stem, 20-40 mm long, 5-20 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, 4-4.5 mm long, without glands, ribless. Pedicel present, 2.5-3 mm long, hairy. Bracteoles present but early deciduous, hairy or glabrous, striate or not striate. Calyx 3.5-5.6 mm long, not accrescent, hairy, with simple hairs, ribless; pustules or glands absent. Corolla 9-9.5 mm long, multicoloured, mostly yellow, red or orange, with some yellow, red or orange spots, streaks or blotches; claws present; standard 9-9.5 mm long, glabrous, auriculate, wings 6.5-7 mm long, auriculate, keel 6.5 mm long, not beaked, not auriculate, glabrous. Stamens ten; anthers 0.6-0.7 mm long, at two different levels (filaments alternately long and short); filaments free (or united at the very base), 4.5-5 mm long. Ovary stipitate, hairy or glandular; style 7 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 August, September and October. Occurs in the South-West Botanical Province, in the Avon Wheatbelt, Jarrah Forest and Swan Coastal Plain IBRA regions.

C. Hollister and K.R. Thiele, 24 October 2023

Distribution

IBRA Regions
Avon Wheatbelt, Jarrah Forest, Swan Coastal Plain.
IBRA Subregions
Dandaragan Plateau, Katanning, Northern Jarrah Forest.
Local Government Areas (LGAs)
Chittering, Cuballing, Gingin, Goomalling, Narrogin, Northam, Toodyay, Victoria Plains, Williams.