Cyanothamnus defoliatus (F.Muell.) Duretto & Heslewood

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

Scientific Description

Shrub, spines absent; branchlets smooth, without distinct raised glands, +/- cylindrical in cross-section, glabrous. Leaves opposite, simple, 3-5.5 mm long, 0.5 mm wide, terete or subterete, smooth, without distinct raised glands, glabrous; stipular excrescences absent. Flowers in axillary, loose clusters (cymes or panicles) or in terminal, loose clusters (cymes or panicles); pedicels 4-5 mm long; calyx present, 2-3 mm long, smooth, without distinct raised glands, glabrous; corolla blue, petals four, 7-9.3 mm long, imbricate (overlapping), free, glabrous; stamens twice as many as petals, warty with prominent raised glands, glabrous, with an appendage. Flowers in September, October and November. Occurs in the South-West Botanical Province, in the Jarrah Forest, Mallee, Warren and Swan Coastal Plain IBRA region(s).

C. Hollister and K.R. Thiele, 8 December 2020


IBRA Regions
Jarrah Forest, Swan Coastal Plain, Warren.
IBRA Subregions
Northern Jarrah Forest, Perth, Southern Jarrah Forest, Warren.
Local Government Areas (LGAs)
Armadale, Augusta Margaret River, Bridgetown-Greenbushes, Busselton, Capel, Dardanup, Donnybrook-Balingup, Manjimup, Murray, Nannup.