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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.

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Ptilotus carlsonii F.Muell.

Reference
Victorian Naturalist 5:74 (1889)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Erect or spreading annual, herb, 0.05-0.3 m high. Fl. yellow-orange, Aug to Oct. Clay, loam. Plains.

Grazyna Paczkowska, Descriptive Catalogue, 6 May 1996
Image

Scientific Description

Annuals, stems several, more or less prostrate, glabrescent, with nodose hairs. Leaves present, 5-100 mm long, 0.5-10 mm wide, glabrescent, with nodose hairs; basal rosette present; cauline leaves alternate. Spikes yellow or orange, ovoid or hemispherical, solitary, with densely arranged flowers. Bracts 6-8 mm long, coloured, hairy, not awned or mucronate, with an obscure midrib. Bracteoles 5.1-6 mm long, coloured, hairy, awned or mucronate, with a prominent midrib. Outer tepals 10.2-11.7 mm long, not entire. Inner tepals 9.8-11.7 mm long, glabrous within. Style 1.7 mm long, curved, obliquely fixed to ovary. Seeds (1.2-)1.3-1.4(-1.5) mm long, glossy, brown. Distribution: South West and Eremaean Botanical Region; IBRA regions: Coolgardie, Murchison, Nullarbor.

R. Davis, 30 April 2019

Distribution

IBRA Regions
Avon Wheatbelt, Coolgardie, Murchison, Nullarbor.
IBRA Subregions
Eastern Goldfield, Eastern Murchison, Mardabilla, Merredin, Nullarbor Plain, Southern Cross.
Local Government Areas (LGAs)
Coolgardie, Dundas, Kalgoorlie-Boulder, Koorda, Menzies, Narembeen, Trayning, Yilgarn.