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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. The project team is now conducting testing of the migrated data, and a further update will be provided by the end of the financial year (1 July). Please reach out to us if you have any questions or concerns.

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Cyanothamnus coerulescens subsp. spinescens (Benth.) Duretto & Heslewood

Reference
Taxon 69:493 (2020)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status
Current

Scientific Description

Shrub, spines absent; branchlets smooth, without distinct raised glands, +/- cylindrical in cross-section, covered in hairs or scales, the hairs simple. Leaves opposite, simple, 3.5-4 mm long, 1.2-2 mm wide, flat, the margins flat, smooth, without distinct raised glands, covered in hairs or scales, with simple hairs; stipular excrescences absent. Flowers axillary, solitary; pedicels 4.5-7 mm long; calyx present, 4-6 mm long, smooth, without distinct raised glands, covered in hairs or scales, the hairs simple; corolla pink, white or cream or blue, petals four, 7.5-9 mm long, imbricate (overlapping), free, hairy on the surfaces; stamens twice as many as petals, 2.5-3 mm long, smooth, hairy, with an appendage. Flowers in April, July, August, September, October and November. Occurs in the Eremaean and South-West Botanical Province, in the Yalgoo, Murchison, Great Victoria Desert, Mallee and Swan Coastal Plain IBRA region(s).

C. Hollister and K.R. Thiele, 14 November 2023

Distribution

IBRA Regions
Avon Wheatbelt, Coolgardie, Esperance Plains, Geraldton Sandplains, Great Victoria Desert, Mallee, Murchison, Swan Coastal Plain, Yalgoo.
IBRA Subregions
Dandaragan Plateau, Eastern Goldfield, Eastern Murchison, Geraldton Hills, Katanning, Lesueur Sandplain, Merredin, Recherche, Shield, Southern Cross, Tallering, Western Mallee.
IMCRA Regions
Central West Coast.
Local Government Areas (LGAs)
Bruce Rock, Chapman Valley, Coolgardie, Coorow, Corrigin, Cunderdin, Dandaragan, Dowerin, Dumbleyung, Dundas, Goomalling, Greater Geraldton, Irwin, Kalgoorlie-Boulder, Kellerberrin, Kondinin, Koorda, Lake Grace, Menzies, Merredin, Mingenew, Moora, Morawa, Mount Marshall, Mukinbudin, Narembeen, Northam, Northampton, Nungarin, Perenjori, Pingelly, Quairading, Ravensthorpe, Tammin, Three Springs, Trayning, Victoria Plains, Wongan-Ballidu, Wyalkatchem, Yalgoo.