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Indigofera oblongifolia Forssk.

Reference
Fl.Aegypt.-Arab. 137 (1775)
Conservation Code
Not threatened
Naturalised Status
Alien to Western Australia
Name Status
Current

Erect, spreading shrub, to 2 m high. Fl. pink&yellow, Apr or Jun or Sep. Brown sandy clay, white clay over limestone, alluvial soils. Coastal areas, roadsides.

Amanda Spooner, Descriptive Catalogue, 17 August 2007
Image

Scientific Description

Erect, shrub, spindly shrub (broom-like). Stems terete, not spiny, hairy; pustules or glands absent. Leaves or phylloclades clearly present, compound, alternate, 10-20 mm long, hairy, with simple hairs, flat with flat margins; margins entire; tubercles absent, leaflets 1-4; pustules or glands absent. Stipules present and persistent to older leaves, 2-6 mm long, without glands, ribless. Pedicel 0.5-1 mm long. Bracteoles present but early deciduous, hairy (?). Calyx 1.5-3 mm long, hairy, with simple hairs; pustules or glands absent. Corolla multicoloured, mostly yellow or pink, with some yellow or pink spots, streaks or blotches; standard 5-6 mm long, hairy at least in part, not auriculate, wings 4.5-5.5 mm long, not auriculate, keel 5-7 mm long, not beaked, not auriculate, hairy at least in part. Stamens ten, at two different levels (filaments alternately long and short); filaments united in an open sheath with one free stamen, 5.2-5.5 mm long. Ovary hairy or glandular; style 6-6.5 mm long, hairy or glandular towards the base, bearded (with a tuft of hairs at apex), terete. Fruit dehiscent (a pod or follicle), sessile or subsessile, not constricted between the seeds, round in cross-section, not beaked. Flowers in April, June and September. Occurs in the Northern and Eremaean Botanical Province, in the Pilbara and Dampierland IBRA regions.

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

Distribution

IBRA Regions
Dampierland, Ord Victoria Plain, Pilbara.
IBRA Subregions
Chichester, Pindanland, Roebourne, South Kimberley Interzone.
IMCRA Regions
Pilbara (nearshore).
Local Government Areas (LGAs)
Broome, Derby-West Kimberley, Karratha, Port Hedland.