Sphaerolobium calcicola R.Butcher
Austral.Syst.Bot. 17:431-434, Fig. 5 (2004)

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

Brief Description
Amanda Spooner, Wednesday 20 August 2003

Slender, multi-stemmed, scandent or erect shrub, to 1.5 m high. Fl. orange-red, Jun or Sep to Nov. White-grey-brown sand, sandy clay over limestone, black peaty sandy clay. Tall dunes, winter-wet flats, interdunal swamps, low-lying areas.


Beard’s Provinces: South-West Province.

IBRA Regions: Swan Coastal Plain.

IBRA Subregions: Perth.

IMCRA Regions: WA South Coast.

Local Government Areas (LGAs): Denmark, Harvey, Murray, Rockingham, Wanneroo, Waroona.

Scientific Description
C. Hollister and K.R. Thiele, Friday 4 September 2020

Erect, shrub, spindly shrub (broom-like). Stems terete, not spiny, glabrous; pustules or glands absent. Leaves or phylloclades clearly present, simple, alternate, not continuous with stem, 8 mm long, 6 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, 2-3 mm long, glabrous. Bracteoles present and persistent. Calyx 6.5-7 mm long, not accrescent, glabrous, ribless; pustules or glands absent. Corolla 8-11.5 mm long, multicoloured, mostly yellow, red or orange, with some yellow, red or orange spots, streaks or blotches; claws present; standard 5-8.5 mm long, glabrous, not auriculate, wings 6.5-8 mm long, not auriculate, keel 5-9.5 mm long, not beaked, not auriculate, glabrous. Stamens ten; anthers 0.8-1 mm long, at two different levels (filaments alternately long and short); filaments free (or united at the very base), 4.5-7 mm long. Ovary stipitate, glabrous; style 11-15 mm long, glabrous, bearded (with a tuft of hairs at apex), terete. Fruit dehiscent (a pod or follicle), stipitate, not constricted between the seeds, round in cross-section, hairy (?), not beaked. Flowers in June, September, October and November. Occurs in the South-West Botanical Province, in the Swan Coastal Plain IBRA regions. Conservation Code Priority Three (P3).