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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 declinatus Nees
Curved Mulla Mulla

Reference
Lehm., Pl.Preiss. [J.G.C.Lehmann] 1:631 (1845)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Prostrate or ascending perennial, herb, 0.03-0.2 m high. Fl. pink, Sep to Dec.

Amanda Spooner, Descriptive Catalogue, 17 December 1999
Image

Scientific Description

Perennial herbs, stems several, more or less prostrate, glabrescent, with nodose hairs. Leaves present, 3-55 mm long, 1-5 mm wide, glabrescent, with nodose hairs; basal rosette present; cauline leaves alternate. Spikes pink or magenta, ovoid, hemispherical or spherical, solitary, with densely arranged flowers. Bracts 7.5 mm long, colourless, hairy, not awned or mucronate, with an obscure midrib. Bracteoles 6.5-10.4 mm long, colourless, hairy, not awned or mucronate, with a prominent midrib. Outer tepals 15-20(-21) mm long, not entire. Inner tepals 14-19(-20.5) mm long, glabrous within. Style 4.5-6 mm long, curved, obliquely fixed to ovary. Seeds 1.6-1.8 mm long, glossy, brown. Distribution: South West Botanical Region; IBRA regions: Geraldton Sandplain, Swan Coastal Plain, Avon Whealtbelt, Jarrah Forest.

R. Davis, 30 April 2019

Distribution

IBRA Regions
Avon Wheatbelt, Geraldton Sandplains, Jarrah Forest, Swan Coastal Plain.
IBRA Subregions
Dandaragan Plateau, Geraldton Hills, Katanning, Lesueur Sandplain, Merredin, Northern Jarrah Forest, Perth, Southern Jarrah Forest.
Local Government Areas (LGAs)
Beverley, Boddington, Boyup Brook, Broomehill-Tambellup, Canning, Chapman Valley, Chittering, Cuballing, Dandaragan, Dowerin, Goomalling, Gosnells, Greater Geraldton, Kalamunda, Katanning, Kellerberrin, Kojonup, Moora, Mundaring, Murray, Narrogin, Northam, Northampton, Pingelly, Quairading, Swan, Tammin, Toodyay, Victoria Plains, Wagin, West Arthur, Wickepin, Williams, Wongan-Ballidu, Woodanilling, York.