Gastrolobium semiteres G.Chandler & Crisp
Austral.Syst.Bot. 15:634-635 (2002)

Conservation Code: Priority Three
Naturalised Status: Native to Western Australia
Name Status: Current

Brief Description
Amanda Spooner, Thursday 9 October 2003

Open, multi-stemmed shrub, to 1.5 m high. Fl. orange/yellow & purple/red, Aug to Oct. Deep yellow sand, yellow to brown sandy clay, gravel, granite. Broad sand dunes, around rocks, undulating plains.


Beard’s Provinces: Eremaean Province.

IBRA Regions: Coolgardie.

IBRA Subregions: Southern Cross.

Local Government Areas (LGAs): Coolgardie, Dundas, Yilgarn.

Scientific Description
C. Hollister and K.R. Thiele, Friday 17 January 2020

Erect or prostrate,spreading or scrambling, shrub, spindly shrub (broom-like). Stems terete, not spiny, hairy; pustules or glands absent. Leaves or phylloclades clearly present, simple, opposite, continuous with stem, 15-40 mm long, 1.2-1.6 mm wide, hairy, with simple hairs, revolute; margins entire; tubercles absent; pustules or glands absent. Stipules present and persistent to older leaves. Pedicel present, 3-4 mm long, hairy. Bracteoles present but early deciduous. Calyx 4.5-8 mm long, not accrescent, hairy, with simple hairs, ribless; pustules or glands absent. Corolla 10-16 mm long, multicoloured, mostly yellow or orange, with some yellow or orange spots, streaks or blotches; claws absent; standard 11-15 mm long, glabrous, auriculate, wings 10-14 mm long, auriculate, keel 10-11.5 mm long, not beaked, not auriculate, glabrous. Stamens ten; anthers 0.8-1.3 mm long, at two different levels (filaments alternately long and short); filaments free (or united at the very base), 10.2-11.5 mm long. Ovary stipitate, hairy or glandular; style 9.5-14 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 Eremaean Botanical Province, in the Coolgardie IBRA regions. Conservation Code Priority Three (P3).