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Indigofera trita L.f.

Reference
Suppl.Pl. 335 (1782)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Spreading to erect annual or perennial (short-lived), herb or shrub, 0.3-0.6(-0.8) m high. Fl. orange-red/red/pink, Jan or Mar to May or Sep to Nov. Clay, sandy or loamy soils over limestone or sandstone. Rocky coasts, alluvial plains, stony hills.

Grazyna Paczkowska, Descriptive Catalogue, 20 June 1996
Image

Scientific Description

Prostrate,spreading or scrambling, herb. Stems terete, not spiny, hairy; pustules or glands absent. Leaves or phylloclades clearly present, compound, alternate, not continuous with stem, 15-25 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 and persistent to older leaves, 3-4 mm long, without glands, ribless. Pedicel present, 0.5-1 mm long, hairy. Bracteoles present but early deciduous. Calyx 2.5-3.5 mm long, not accrescent, hairy, with simple hairs, ribless; pustules or glands absent. Corolla 4-5 mm long, multicoloured, mostly pink, red or orange, with some pink, red or orange spots, streaks or blotches; claws absent; standard 5-6 mm long, hairy at least in part, wings 5-6 mm long, not auriculate, keel 5-6 mm long, not beaked, not auriculate, hairy at least in part. Stamens ten; filaments united in an open sheath with one free stamen. Ovary stipitate, hairy or glandular. Fruit dehiscent (a pod or follicle), 20-30 mm long, 2-2.5 mm wide, sessile or subsessile, not constricted between the seeds, round in cross-section, hairy, with simple hairs, not beaked. Flowers in January, March, April, May, September, October and November. Occurs in the Northern and Eremaean Botanical Province, in the Pilbara, Carnarvon, Northern Kimberley, Victoria Bonaparte, Central Kimberley, Ord-Victorian-Plain and Dampierland IBRA regions.

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

Distribution

IBRA Regions
Carnarvon, Central Kimberley, Dampierland, Great Sandy Desert, Northern Kimberley, Ord Victoria Plain, Pilbara, Tanami, Victoria Bonaparte.
IBRA Subregions
Cape Range, Chichester, Fitzroy Trough, Hamersley, Hart, Keep, Mackay, McLarty, Mitchell, Mount Eliza, Pentecost, Pindanland, Purnululu, Roebourne, South Kimberley Interzone, Tanami Desert, Wooramel.
IMCRA Regions
Canning, Kimberley, Pilbara (offshore).
Local Government Areas (LGAs)
Ashburton, Broome, Derby-West Kimberley, East Pilbara, Exmouth, Halls Creek, Karratha, Port Hedland, Upper Gascoyne, Wyndham-East Kimberley.