Bidens connata |
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bident conné, purple-stem beggar-ticks, purplestem beggars-ticks, swamp beggar-ticks |
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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 |
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Phenology | Flowering Aug–Oct. |
Habitat | Marshes and other wet sites |
Elevation | 10–1700 m (0–5600 ft) |
Distribution |
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]
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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 | |
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) |
Web links |
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