Gastrolobium hamulosum Meisn. Hookpoint Poison
Lehm., Pl.Preiss. 2:218 (1848)

Conservation Code: Threatened Flora (Declared Rare Flora — Extant)
Naturalised Status: Native to Western Australia
Name Status: Current

Brief Description
Amanda Spooner, Monday 15 December 2003

Low shrub, 0.2-0.45 m high. Fl. yellow&orange&red&purple, Aug to Oct. Sandy, often gravelly soils or clay. Flats, slopes, ridges.


Beard’s Provinces: South-West Province.

IBRA Regions: Avon Wheatbelt, Geraldton Sandplains.

IBRA Subregions: Avon Wheatbelt P2, Lesueur Sandplain.

Local Government Areas (LGAs): Coorow, Moora, Northam, Victoria Plains, Wongan-Ballidu.

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

Erect, shrub, spindly shrub (broom-like). Stems terete, hairy; pustules or glands absent. Leaves or phylloclades clearly present, simple, opposite or whorled, not continuous with stem, 5.5-9.5 mm long, 2.5-4.5 mm wide, hairy, with simple hairs, flat with flat margins or flat with recurved margins; margins entire; tubercles absent; pustules or glands absent. Stipules present and persistent to older leaves, 2-3 mm long, without glands. Pedicel present, 0.5-1 mm long, hairy. Bracteoles present but early deciduous. Calyx 5.5-6 mm long, hairy, with simple hairs, ribbed; pustules or glands absent. Corolla 10-11.3 mm long, multicoloured, mostly yellow, red, orange or purple, with some yellow, red, orange or purple spots, streaks or blotches; claws present; standard 9.5-10.5 mm long, glabrous, auriculate, wings 8.5-9 mm long, auriculate, keel 7.6 mm long, auriculate, glabrous. Stamens ten; anthers 0.6 mm long, at two different levels (filaments alternately long and short); filaments free (or united at the very base), 7.2-8 mm long. Ovary stipitate, hairy or glandular; style 9.2-11 mm long, hairy or glandular towards the base, 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 Geraldton Sandplains and Avon Wheatbelt IBRA regions. Conservation Code Threatened (T).