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Bidens pilosa L.

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Names_Plants record source
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Exotic
Wild
New Zealand
Political Region

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L.
L.
1753
832
ICN
Bidens pilosa L.
species
Bidens pilosa

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pilosa

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Bidens pilosa L.

Erect or spreading herb up to 6dm. or more tall; branches and branchlets angled. Lvs on petioles up to c. 3 cm. long; lamina simple, 2-5 cm. long, about ovate-lanceolate, thin, acute to acuminate, serrate. Sts some or all lvs are pinnately cut into 3-5 segs. Capitula up to ± 15 mm. diam., on long slender peduncles. Phyll. ± 6·5 mm. long. Ray-florets few, short, or 0. Achenes almost black, 4-angled, striate, c. 4-5 mm. long; bristles us. 4, up to c. 2 mm. long.

Bidens pilosa L.

Erect annual or short-lived perennial, 10-100 cm tall. Stems glabrous or sparsely hairy, ribbed, much-branched. Lvs glabrous to moderately hairy especially below, ciliate, petiolate, usually 3-foliolate with terminal leaflet larger, sometimes simple and not lobed to 3-lobed; leaflets sessile or shortly petiolulate, ovate to lanceolate, evenly serrate, acute to acuminate, (1)-2-10-(25) cm long. Upper cauline lvs becoming smaller, shortly petiolate, and more often simple and not lobed or 3-lobed. Capitula c. 6-10 mm diam. Outer involucral bracts 7-9, foliaceous, ciliate, linear to narrowly oblong-obovate, 3-6 mm long; inner bracts many, membranous, triangular to subulate, 4-6 mm long, with dark lined centre and pale margins. Receptacular scales similar to inner bracts but narrower. Florets usually all ☿, tubular, yellow-orange, sometimes c. 5 white ray florets present. Achenes flattened or 3-(4)-angled, ± linear, ribbed, dark brown, usually glabrous except for ribs ciliate near apex, sometimes with scattered hairs elsewhere, 5-9 mm long; awns mostly 3, sometimes 2, rarely 4, sometimes unequal, (0.5)-1.5-2.5 mm long.

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Bidens pilosa L.
Bidens pilosa L.
Bidens pilosa L.
Bidens pilosa L.
Bidens pilosa L.
Bidens pilosa L.
Bidens pilosa L.
Bidens pilosa L.

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Bidens pilosa L.
American Samoa
Bidens pilosa L.
Chile
Bidens pilosa L.
China
Bidens pilosa L.
Cook Islands
Bidens pilosa L.
Cook Islands
Penrhyn
Bidens pilosa L.
Cook Islands
Rakahanga
Bidens pilosa L.
Cook Islands
Rarotonga
Bidens pilosa L.
Fiji
Bidens pilosa L.
French Polynesia
Bidens pilosa L.
Kiribati
Bidens pilosa L.
New Zealand
Bidens pilosa L.
New Zealand
Canterbury Land District
Bidens pilosa L.
New Zealand
Gisborne Land District
Bidens pilosa L.
New Zealand
North Auckland Land District
Bidens pilosa L.
Niue
Bidens pilosa L.
Norfolk Island
Bidens pilosa L.
Samoa
Bidens pilosa L.
Tonga
Bidens pilosa L.
United States

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a257c6f6-35de-426d-98cb-a0d5d6ff8664
scientific name
Names_Plants
1 January 2000
28 April 2006
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