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bident à trois divisions, three-lobed beggar-ticks, three-lobed beggars-ticks, three-part beggarticks, threelobe beggarticks, tickseed

Habit Annuals, (5–)20–70(–200) cm.

sessile or petioles 5–15(–35+) mm (± winged);

blades ± elliptic to ovate or lanceolate, 40–80(–150+) × 15–40(–60+) mm, sometimes laciniately 1-pinnatisect with 1–4+ lobes near bases, bases cuneate, margins entire or dentate to serrate, usually ciliate, apices acute to acuminate, faces glabrous or hirtellous.


10–40(–80) mm.


campanulate to hemispheric or broader, (4–)5–7(–12) × (3–)6–12(–15+) mm.

Ray florets

usually 0, sometimes 1–5;

laminae orange yellowish, 4–8 mm.

Disc florets


corollas pale yellow to orange, (2–)3–4 mm (gradually ampliate, anthers usually pale).


(6–)7–8(–13), elliptic-ovate to lance-ovate, (4–)6–9(–12) mm.


of (2–)6–7(–10) ± spreading, oblanceolate or lanceolate to linear, ± foliaceous bractlets or bracts 7–35(–60) mm, margins (entire or serrate) sometimes sparsely ciliate, abaxial faces hispidulous near bases, distally glabrous.


borne singly or in 2s or 3s.


blackish to purplish or brown, ± flattened, sometimes weakly 3(–4)-angled, usually cuneate to linear, outer (3–)6–7(–10) mm, inner (4–)6–9(–11) mm, margins proximally antrorsely to patently, distally retrorsely, barbed, apices ± truncate to concave, faces ± 1-nerved, usually smooth, seldom notably tuberculate, glabrous or sparsely strigillose;

pappi 0, or of (1–)3–3(–4+) ± erect to spreading, retrorsely barbed awns (0.2–)2–3(–6) mm.


= 48.

Bidens tripartita

Phenology Flowering Aug–Oct.
Habitat Marshes and other wet sites
Elevation 10–1700 m (0–5600 ft)
from FNA
AK; AL; CA; CO; CT; DC; DE; GA; IA; IL; IN; KS; KY; LA; MA; MD; ME; MI; MN; MO; MS; MT; NC; ND; NE; NH; NJ; NM; NY; OH; OK; OR; PA; RI; SC; SD; TN; TX; UT; VA; VT; WA; WI; WV; WY; AB; BC; MB; QC; Europe; Asia; n Africa [Introduced in Pacific Islands, Australia]
[WildflowerSearch map]
[BONAP county map]

Plants with cypsela mid-nerves strongly developed (cypselae more or less strongly 4-angled and, often, tuberculate) that are treated below as Bidens connata have been included in B. tripartita, perhaps rightly so. And some botanists have included (or advocated inclusion of) B. eatonii, B. heterodoxa, and/or B. infirma in B. tripartita, as well, perhaps rightly so.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Source FNA vol. 21, p. 217.
Parent taxa Asteraceae > tribe Heliantheae > subtribe Coreopsidinae > Bidens
Sibling taxa
B. amplissima, B. aristosa, B. aurea, B. beckii, B. bidentoides, B. bigelovii, B. bipinnata, B. cernua, B. connata, B. discoidea, B. eatonii, B. frondosa, B. heterodoxa, B. heterosperma, B. hyperborea, B. laevis, B. lemmonii, B. leptocephala, B. mitis, B. pilosa, B. polylepis, B. tenuisecta, B. trichosperma, B. vulgata
Synonyms B. comosa
Name authority Linnaeus: Sp. Pl. 2: 831. (1753)
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