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The Western Australian Herbarium’s collections management system and census were set to read-only mode on 1 October 2025. Taxonomic updates published since this time are not being reflected in Florabase, herbarium collections, or Western Australia’s taxonomic names census (Nomos). Conservation listings displayed on Florabase may also be out of date. Please refer to DBCA’s Threatened species and communities webpage for the most recent Threatened and Priority Flora List, noting that recent taxonomic updates are similarly not included. Our database migration is moving to a staging phase. We thank you for your patience as we ensure the integrity of our biodiversity data, develop new workflows, and train staff to use the new systems. 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.