Gastrolobium truncatum Benth.

Scientific Description

Twining or climbing plants. Stems angular, not spiny, hairy; pustules or glands absent. Leaves or phylloclades clearly present, simple, opposite, continuous with stem, 6-25 mm long, 5-18 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, 2.5 mm long, without glands, ribless. Pedicel present, 3.5-4 mm long, hairy. Bracteoles present but early deciduous. Calyx 4.5-6 mm long, not accrescent, hairy, with simple hairs, ribless; pustules or glands absent. Corolla 8.5-10 mm long, multicoloured, mostly yellow, orange or purple, with some yellow, orange or purple spots, streaks or blotches; claws present; standard 8.2-9.5 mm long, glabrous, auriculate, wings 9 mm long, auriculate, keel 7.6-8.5 mm long, not beaked, auriculate, hairy at least in part. Stamens ten; anthers 0.4-0.6 mm long, at two different levels (filaments alternately long and short); filaments free (or united at the very base), 5-7 mm long. Ovary stipitate, hairy or glandular; style 7.6-8.6 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 May, June, July, August and September. Occurs in the South-West Botanical Province, in the Avon Wheatbelt and Jarrah Forest IBRA regions.