OregonFlora species comparison

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Bidens tripartita

(synonym of Bidens connata)

Bidens aristosa

three-lobed beggars-ticks
Ray florets

usually 0, rarely 5–8;

rays 5–14 mm, yellow.

Disc florets

10–100+;

corollas yellow or orange, 3–5 mm.

Fruits

obovate or wedge-shaped, 3–10 mm; flat or 3–4-angled, glabrous or minutely hirsute, pappi of 2–4 retrorsely barbed awns, 1–3(6) mm.

4–5+, usually erect, sometimes spreading and foliaceous, margins entire or setose proximally; inner 5–10 mm, glabrous.

2n

=48.

Bidens tripartita

Bidens aristosa
Distribution
[WildflowerSearch map]
[WildflowerSearch map]
[BONAP county map]
Discussion

Riverbanks, ponds, marshes, bogs, weedy sites. Flowering Aug–Oct. 0–700 m. Casc, Col, CR, Est, WV. CA, WA; north to AK, northeast to Quebec, east to Nova Scotia, southeast to GA, south to Mexico; Africa, Asia, Australia, Europe. Native.
Source Flora of Oregon, volume 2, page 203
Kenton Chambers
Sibling taxa
B. beckii, B. cernua, B. frondosa, B. tripartita, B. vulgata
B. beckii, B. cernua, B. frondosa, B. tripartita, B. vulgata
Synonyms Bidens connata
Web links 
Unless otherwise noted, all data comes from OregonFlora.



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Choose a data source: Flora of North America, OregonFlora, UW Burke Herbarium

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