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Service Notice

The Western Australian Herbarium’s collections management system, WAHerb, and DBCA’s flora taxonomic names application, WACensus, have been set to read-only mode since 1 October 2025. Recent taxonomic changes are not currently being reflected in Florabase, herbarium collections, or the census. Due to the rapidly approaching holiday season and associated agency and facility soft closures, along with the substantial work involved in data mapping, cleaning, and verification, the migration to the new collection management software is not expected to occur before 1 March 2026, when a further update will be provided. Please reach out to us if you have any questions or concerns.

The notice period started at 9:45 am on Friday, 12 December 2025 +08:00 and will end at 12:00 pm on Monday, 2 March 2026 +08:00.

Stylosanthes humilis Kunth
Townsville Stylo

Reference
Humb., Bonpl. & Kunth, Nov.Gen.Sp.Pl. 6:506,Tab.594 (1824)
Conservation Code
Not threatened
Naturalised Status
Alien to Western Australia
Name Status
Current

Prostrate or decumbent annual, herb, 0.1-0.6 m high. Fl. yellow-orange, Apr to Aug. Sand, laterite. Damp areas.

Amanda Spooner, Descriptive Catalogue, 11 June 2005

Scientific Description

Prostrate,spreading or scrambling, shrub, spindly shrub (broom-like). Stems terete, not spiny, hairy; pustules or glands absent. Leaves or phylloclades clearly present, compound, alternate, not continuous with stem, 10-30 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, 8-10 mm long, without glands, ribless. Bracteoles present and persistent. Calyx 4-5 mm long, not accrescent, hairy, with simple hairs, ribless; pustules or glands absent. Corolla multicoloured, mostly yellow or orange, with some yellow or orange spots, streaks or blotches; claws present; standard 3-4 mm long, glabrous, not auriculate, wings 3-4 mm long, auriculate, keel 3-3.5 mm long, not beaked, auriculate, glabrous. Stamens ten. Fruit dehiscent (a pod or follicle), constricted between the seeds, round in cross-section, beaked. Flowers in April, May, June, July and August. Occurs in the Northern and Eremaean Botanical Province, in the Carnarvon, Northern Kimberley, Victoria Bonaparte, Central Kimberley, Ord-Victorian-Plain and Dampierland IBRA regions.

C. Hollister and K.R. Thiele, 17 April 2024

Distribution

IBRA Regions
Carnarvon, Central Kimberley, Dampierland, Indian Tropical Islands, Northern Kimberley, Ord Victoria Plain, Victoria Bonaparte.
IBRA Subregions
Fitzroy Trough, Keep, Mitchell, Pentecost, Purnululu, Wooramel.
Local Government Areas (LGAs)
Broome, Carnarvon, Christmas Island, Derby-West Kimberley, Wyndham-East Kimberley.