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Canavalia rosea (Sw.) DC.
Wild Jack Bean

Prodr. 2:404 (1825)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status

Prostrate, trailing perennial, herb or climber. Fl. purple-blue-pink, Feb to Oct. Sand. Coastal beaches & sand dunes, among limestone rocks.

Grazyna Paczkowska, Descriptive Catalogue, 28 May 1996

Scientific Description

Prostrate,spreading or scrambling or twining or climbing plants, herb. Stems terete, not spiny, hairy; pustules or glands absent. Leaves or phylloclades clearly present, compound, alternate, not continuous with stem, 70-120 mm long, hairy, with simple hairs, flat with flat margins; margins entire; tubercles absent, pinnately arranged, terminal leaflet present, stalked; pustules or glands absent. Stipules present but early deciduous ( only visible on youngest leaves ). Pedicel present, 4-5 mm long, hairy. Bracteoles present but early deciduous. Calyx 10-12 mm long, not accrescent, hairy, with simple hairs, ribless; pustules or glands absent. Corolla 25-28 mm long, multicoloured, mostly pink or purple, with some pink or purple spots, streaks or blotches; claws absent; standard 19-20 mm long, glabrous, auriculate, wings 21-23 mm long, not auriculate, keel 22-25 mm long, not beaked, not auriculate, glabrous. Stamens ten; anthers 1.6-2 mm long, at two different levels (filaments alternately long and short); filaments united in an open sheath with one free stamen, 21-24 mm long. Ovary stipitate, hairy or glandular; style 24 mm long, hairy or glandular towards the base, not bearded, terete. Fruit dehiscent (a pod or follicle), 120 mm long, 25 mm wide, stipitate or sessile or subsessile, constricted between the seeds or not constricted between the seeds, round in cross-section, glabrous, not beaked. Flowers in February, March, April, May, June, July, August, September and October. Occurs in the Northern and Eremaean Botanical Province, in the Pilbara, Carnarvon, Northern Kimberley, Victoria Bonaparte and Dampierland IBRA regions.

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


IBRA Regions
Carnarvon, Dampierland, Northern Kimberley, Pilbara, Victoria Bonaparte.
IBRA Subregions
Berkeley, Cape Range, Chichester, Keep, Mitchell, Pindanland, Roebourne.
IMCRA Regions
Canning, Kimberley, Pilbara (nearshore), Pilbara (offshore).
Local Government Areas (LGAs)
Ashburton, Broome, Carnarvon, Derby-West Kimberley, Exmouth, Karratha, Port Hedland, Wyndham-East Kimberley.