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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.

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Stylidium crossocephalum F.Muell.
Posy Triggerplant

Reference
Fragm. (Mueller) 6:5-6 (1867)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Rosetted perennial, herb, 0.08-0.36 m high, Leaves tufted, linear, 1.5-13.5 cm long, 0.6-2.3 mm wide, apex mucronate, margin involute, scabrous. Membraneous scale leaves present at base of mature leaves. Scape glabrous. Inflorescence head-like. Fl. white, Aug to Nov. Sand over limestone or laterite. Sandplain heath, Banksia low woodland, Eucalyptus shrubland.

Amanda Spooner, Descriptive Catalogue, 26 June 2006
Image

Distribution

IBRA Regions
Avon Wheatbelt, Geraldton Sandplains, Jarrah Forest, Swan Coastal Plain.
IBRA Subregions
Dandaragan Plateau, Geraldton Hills, Lesueur Sandplain, Merredin, Perth, Southern Jarrah Forest.
IMCRA Regions
Central West Coast.
Local Government Areas (LGAs)
Carnamah, Chapman Valley, Chittering, Coorow, Dandaragan, Gingin, Greater Geraldton, Irwin, Mingenew, Plantagenet, Swan, Three Springs, Wanneroo.