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Isopogon trilobus R.Br.
Barrel Coneflower

Trans.Linn.Soc.London 10:72 (1810)
Conservation Code
Not threatened
Naturalised Status
Native to Western Australia
Name Status

Upright, non-lignotuberous shrub, 0.3-2 m high. Fl. yellow/cream-yellow, Sep to Dec or Jan. White, grey or brown sand, sand & laterite. Sandplains, sand dunes, coastal rocky areas.

Grazyna Paczkowska, Descriptive Catalogue, 22 August 1995

Scientific Description

Shrubs, 1-2.5 m high, with straight hairs. Leaves alternate, 40-70 mm long, glabrous; lamina flat, once divided or twice or more divided, pinnately divided, tripartitely divided or divided only at the apex, shallowly divided or deeply divided, with 3-5 points or lobes; distance from base of leaf to lowest lobe 20-30 mm. Inflorescences not viscid, cream or yellow. Perianth 10-12 mm long, hairy, the limb apex hairy all over; pistil 10-13 mm long; pollen presenter fusiform, hairy, 3-5 mm long. Cone with deciduous scales, 26-28 mm long. Flowers in January, September, October, November or December. Occurs in the Eremaean (ER) or South-west (SW) Botanical Province(s), in the Coolgardie (COO), Avon Wheatbelt (AW), Jarrah Forest (JF), Mallee (MAL) or Esperance Plains (ESP) IBRA subregion(s).

C. Hollister, N.S. Lander and K.R. Thiele, 26 May 2023


IBRA Regions
Avon Wheatbelt, Coolgardie, Esperance Plains, Jarrah Forest, Mallee.
IBRA Subregions
Eastern Mallee, Fitzgerald, Katanning, Mardabilla, Recherche, Southern Jarrah Forest, Western Mallee.
Local Government Areas (LGAs)
Albany, Broomehill-Tambellup, Cranbrook, Dundas, Esperance, Gnowangerup, Jerramungup, Kent, Plantagenet, Ravensthorpe.