Cirsium arvense var. arvense

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Naturalised

Perennial, mostly 60–90 cm high, dioecious, extensively rhizomatous; often unbranched below inflorescences, stems wingless, cobwebbed to glabrescent. Leaves with spiny margins, dark green above, white-tomentose below; basal leaves oblanceolate, to 10 cm long, 4 cm wide, sinuate to dentate, obscurely petiolate; cauline leaves oblanceolate to lanceolate, 1–7 cm long, to 2 cm wide, pinnatifid, base subamplexicaul to somewhat decurrent. Capitula pedunculate, many in loose corymbs, globose to ovoid, 8–15 mm diam.; involucre 8–25 mm long; intermediate bracts lanceolate, erect to slightly spreading, with a broad terminal spine to c. 1 mm long, purple-tipped; inner bracts longer and narrower, acute. Florets unisexual; corolla 12–18 mm long, pale mauve. Cypselas 2.5–4 mm long, pale brown to olive green, finely grooved; pappus 2–2.5 cm long. Flowers mostly Dec.–Mar.

*CVU, *GipP, *HNF, *HSF, *Strz, *VVP, *WaP. Also naturalised WA, SA, NSW, Tas. Widespread and often locally common across southern parts of the State, along roadsides, in crops, pasture and wasteland, mostly on more fertile soils in higher-rainfall areas. Declared a noxious weed in Victoria.

Created by: Andre Messina, 2017-03-20
Updated by: Val Stajsic, 2018-05-09
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Asteranae
order Asterales
family Asteraceae
genus Cirsium
Higher taxa

Victoria

Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <http://avh.chah.org.au>. Find Cirsium arvense var. arvense in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Cirsium arvense var. arvense in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Victorian Volcanic Plain present introduced
Gippsland Plain present naturalised
Warrnambool Plain present introduced
Central Victorian Uplands present introduced
Highlands-Southern Fall present naturalised
Highlands-Northern Fall present introduced
Strzelecki Ranges present naturalised

State distribution

Distribution map
State
Western Australia
South Australia
New South Wales
Victoria
Tasmania