Bidens pilosa L.


Sp. Pl. 832 (1753) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Naturalised

Erect annual herb to 1 m high; stems glabrous to densely hairy. Leaves ovate to broad-ovate in outline, mostly 6–12 cm long and 1–4 cm wide, usually trifoliate or pinnate, sometimes simple, terminal leaflet largest, more or less glabrous to appressed-pubescent, margins toothed; petiole to c. 4 cm long, slightly winged. Capitula 5–15 mm diam.; outer involucral bracts herbaceous, linear, 4–8 mm long; inner bracts lanceolate, 5–10 mm long. Ray florets present, (2–)4–8 mm long, ephemeral, white or pale yellow, or absent. Cypselas linear, 6–12 mm long, curved, 4-angled, antrorsely barbed all over or only on ribs; pappus of 2 or 3 awns, 2–4 mm long, erect or spreading.

*GipP, *HSF, *MuM, *VVP. Native to Mexico, the Caribbean and Central America, widely naturalised in Europe, and throughout tropical and subtropical regions worldwide. A localized weed, mostly from wasteland in urban areas.

6 varieties have been described, but usually only 3 are recognised, 2 in Australia, both in Victoria.

Source: Jeanes, J.A. (1999). Asteraceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 4, Cornaceae to Asteraceae. Inkata Press, Melbourne.
Updated by: Val Stajsic, 2018-02-15
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Asteranae
order Asterales
family Asteraceae
genus Bidens
Higher taxa
Subordinate taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Bidens pilosa in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Bidens pilosa in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Murray Mallee present introduced
Victorian Volcanic Plain present introduced
Gippsland Plain present naturalised
Highlands-Southern Fall present naturalised

State distribution

Distribution map
Western Australia
Northern Territory
South Australia
New South Wales
Australian Capital Territory