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Service Notice

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 Conservation listings displayed on Florabase may also be out of date.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.

The notice period started at 12:00 pm on Wednesday, 1 October 2025 +08:00 and will end at 12:00 pm on Friday, 1 January 2027 +08:00.

Isopogon tridens (Meisn.) F.Muell.
Three-toothed Coneflower

Reference
Fragm. (Mueller) 6:239 (1868)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Bushy shrub, 0.5-1.2 m high. Fl. white-cream/purple, Jun to Aug. Grey or white sand, sometimes over laterite.

Grazyna Paczkowska, Descriptive Catalogue, 22 August 1995
Image

Scientific Description

Shrubs, 1-1.5 m high; branchlets hairy, with straight hairs. Leaves alternate, 35-85 mm long, glabrous; lamina flat, once divided, tripartitely divided or divided only at the apex, shallowly divided, with 2-3 points or lobes; distance from base of leaf to lowest lobe 20-30 mm. Inflorescences not viscid, white, cream or yellow. Perianth 15-18 mm long, hairy, the limb apex hairy at the apex only; pistil 15-18 mm long; pollen presenter not fusiform, hairy, 3-5 mm long, the brush 2-2.5 mm long. Cone with deciduous scales, 18-20 mm long. Flowers in June, July or August. Occurs in the South-west (SW) Botanical Province(s), in the Geraldton Sandplains (GS) or Avon Wheatbelt (AW) IBRA subregion(s).

C. Hollister and K.R. Thiele, 19 January 2024

Distribution

IBRA Regions
Geraldton Sandplains.
IBRA Subregions
Lesueur Sandplain.
Local Government Areas (LGAs)
Carnamah, Coorow, Dandaragan, Irwin, Mingenew, Three Springs.