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bident conné, purple-stem beggar-ticks, purplestem beggars-ticks, swamp beggar-ticks

Habit Annuals, (5–)25–150(–200) cm.
Leaves

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

blades ± elliptic to lanceolate, (20–)40–100(–200+) × 10–30(–70) mm, sometimes laciniately 1-pinnatisect with 1–4+ lobes near bases, bases cuneate, margins entire or dentate to serrate, usually ciliate, apices attenuate, faces glabrous or hirtellous.

Peduncles

10–35(–80) mm.

Involucres

campanulate to hemispheric or broader, (4–)6–12 × (3–)6–9(–15+) mm.

Ray florets

usually 0, sometimes 1–5+;

laminae yellowish, 4–8 mm.

Disc florets

(5–)20–40(–60+);

corollas pale yellow to orange, 2–3 mm (± abruptly ampliate, anthers usually dark, blackish).

Phyllaries

(6–)8(–9), elliptic to oblong or ovate, (4–)5–6(–12) mm.

Calyculi

of 2–6+ spreading or ascending, lanceolate, linear, oblanceolate, oblong, or spatulate, ± foliaceous bractlets or bracts 10–25(–35+) mm, margins (entire or serrate) usually ciliate, abaxial faces hispidulous near bases, distally glabrous.

Heads

borne singly or in 2s or 3s.

Cypselae

blackish to purplish or brown, usually (at least inner) ± 4-angled, usually cuneate to linear, sometimes ± obpyramidal, outer (3–)4–7 mm, inner (4–)5–8 mm, margins proximally antrorsely to patently, distally retrorsely, barbed, apices ± truncate to concave, faces usually strongly 1-nerved, usually tuberculate, glabrous or setulose;

pappi 0, or of (1–)2–4(–6), ± erect to spreading, antrorsely or retrorsely barbed awns (0.2–)2–5 mm.

2n

= 48.

Bidens connata

Phenology Flowering Aug–Oct.
Habitat Marshes and other wet sites
Elevation 10–1700 m (0–5600 ft)
Distribution
from FNA
CT; DE; GA; IA; IL; IN; KS; KY; MA; MD; ME; MI; MN; MO; MT; NC; ND; NE; NH; NJ; NY; OH; PA; RI; SC; SD; TN; VA; WI; WV; NB; NF; NS; ON; PE; QC; Europe; Asia; n Africa [Introduced in Pacific Islands, Australia]
[WildflowerSearch map]
Discussion

Bidens connata may be better treated as part of B. tripartita.

(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. 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. tripartita, B. vulgata
Synonyms B. connata var. ambiversa, B. connata var. anomala, B. connata var. fallax, B. connata var. gracilipes, B. connata var. inundata, B. connata var. petiolata, B. connata var. pinnata, B. connata var. submutica
Name authority Muhlenberg ex Willdenow: Sp. Pl. 3: 1718. (1803)
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