Bidens tripartita L.

Trifid Burr-marigold

Sp. Pl. 831 (1753) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Naturalised

Erect annual herb to 1 m high; stems glabrous or sparsely hairy. Leaves broad-lanceolate to broad-ovate in outline, mostly 6–15 cm long, 2–7 cm wide, usually 3-lobed, sometimes simple or 5-lobed, c. glabrous except for tiny antrorse hairs on margins and veins, margins toothed or shallowly lobed; petiole winged, to c. 4 cm long. Capitula 10–25 mm diam.; outer involucral bracts leaf-like, c. spathulate, to c. 40 mm long, often far exceeding florets; inner bracts lanceolate, 8–12 mm long. Ray florets yellow. Cypselas oblong-cuneate, 4–8 mm long, compressed, ribbed, retrorsely barbed on ribs; pappus of 2–4 awns, 1.5–4 mm long. Flowers autumn and winter.

*EGL, *EGU, *GipP, *HNF, *HSF, *VRiv. Also naturalised NSW. Native to Europe. Naturalised in New Zealand. Uncommon in Victoria, but recorded from a few lowland riparian and swampy habitats in eastern 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, 2017-09-06
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Asteranae
order Asterales
family Asteraceae
genus Bidens
Higher taxa


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

State distribution

Distribution map
New South Wales