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Bidens pilosa L.
TEASERS
Grab-a-Leg; Broomstick; Pitchforks; Cobblers Pegs; Cobblers-pegs; Burr Marigold; Pitch-forks; Stick-tights; Cobblers Peg; Bidens sundaica var minor Blume; Coreopsis leucanthema L; Coreopsis leucantha orth var L sensu Linnaeus, C von 1755; Bidens leucanthema L Willd; Bidens leucantha orth var Willd sensu Willdenow, CL von 1803; Black-jack; Hairy beggarticks; Bidens pilosa fma indivisa; Bidens leucantha var pilosa; Bidens odorata Cav

Life   Plantae   Dicotyledoneae   Asteraceae   Bidens

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Bidens pilosa, pollen 2
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Bidens pilosa, pollen 2

Associates · map
FamilyScientific name @ source (records)
Aphididae  Aphis ( @ NCSU_ENT (3)

Macrosiphum ( @ AMNH_PBI (1)

Uroleucon ( @ NCSU (1)
Apidae  Bombus fraternus @ LACM_ENTB (3)

Bombus variabilis @ LACM_ENTB (9)

Ceratina @ I_JSA (1)

Thyreus himalayensis @ I_JSA (1)
Braconidae  Lysiphlebus ( @ AMNH_PBI (4)
Elsinoaceae  Sphaceloma bidentis @ BPI (7)
Entylomataceae  Entyloma bidentis @ BPI (13)

Entyloma guaraniticum @ BPI (13)

Entyloma incertum @ BPI (2)

Entyloma spegazzinii @ BPI (1)
Erysiphaceae  Erysiphe cichoracearum @ BPI (1)

Sphaerotheca humuli @ BPI (4)
Glomosporiaceae  Thecaphora pustulata @ BPI (5)
Halictidae  Augochlora pura @ CUIC_ENT (1)

Augochloropsis metallica @ AMNH_BEE (1)

Halictus poeyi @ AMNH_BEE (1)

Lasioglossum reticulatum @ AMNH_BEE (1)

Lasioglossum surianae @ CUIC_ENT (1)

Lasioglossum tegulare @ BBSL (1)

Lasioglossum vagans @ I_JSA (1)
Hesperiidae  Pelopidas @ I_JSA (1)
Lygaeidae  Nysius communis @ UCR_ENT (6)
Megachilidae  Coelioxys confusa @ I_JSA (2)

Coelioxys dolichos @ CUIC_ENT (12)

Coelioxys sayi @ BBSL (7)

Heriades currani @ BBSL (1)

Megachile candida @ BBSL (1)

Megachile inimica @ CUIC_ENT (2)

Megachile stulta @ I_JSA (1)

Megachile xylocopoides @ AMNH_BEE (1); CUIC_ENT (15)
Membracidae  Cyrtolobus rufulus @ UDCC_TCN (1)
Miridae  Gn_orthotylinigp11 sp_001 @ AMNH_PBI (1)
Mycosphaerellaceae  Cercospora bidentis @ BPI (2)
Nymphalidae  Acraea violae @ I_JSA (1)

Danaus genutia @ I_JSA (1)

Phalanta phalantha @ I_JSA (2)
Pucciniaceae  Puccinia bidenticola @ BPI (1)

Puccinia bidentis @ BPI (2)

Uromyces bidenticola @ BPI (104)

Uromyces bidentis @ BPI (29)
_  Hesperiidae @ I_JSA (1)

Uredo bidentis @ BPI (2)

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FNA Vol. 21 Page 207, 211 Login | eFloras Home | Help
FNA | Family List | FNA Vol. 21 | Asteraceae | Bidens

8. Bidens pilosa Linnaeus, Sp. Pl. 2: 832. 1753.

Bident poilu

Bidens alba (Linnaeus) de Candolle; B. alba var. radiata (Schultz-Bipontinus) R. E. Ballard; B. odorata Cavanilles; B. pilosa var. radiata (Schultz-Bipontinus) Schultz-Bipontinus

Annuals [perennials], (10—)30—60(—180+)[—250] cm. Leaves: petioles 10—30(—70) mm; blades either ovate to lanceolate, 30—70(—120) × 12—18(—45) mm, or 1-pinnately lobed, primary lobes 3—7, ovate to lanceolate [linear], (10—)25—80+ × (5—)10—40+ mm [blades 2(—3)-pinnatisect], bases truncate to cuneate, ultimate margins serrate or entire, usually ciliate, apices acute to attenuate, faces pilosulous to sparsely hirtellous or glabrate. Heads usually borne singly, sometimes in open, ± corymbiform arrays. Peduncles 10—20(—90) mm. Calyculi (6—)7—9(—13) ± appressed, spatulate to linear bractlets (3—)4—5 mm, margins ciliate, abaxial faces usually hispidulous to puberulent. Involucres turbinate to campanulate, 5—6 × (6—)7—8 mm. Phyllaries (7—)8—9(—13), lanceolate to oblanceolate, 4—6 mm. Ray florets 0 or (3—)5—8+; laminae whitish to pinkish [yellowish], 2—3 or 7—15+ mm. Disc florets 20—40(—80+); corollas yellowish, (2—)3—5 mm. Cypselae: outer red-brown, ± flat, linear to narrowly cuneate, (3—)4—5+ mm, margins antrorsely hispidulous, apices ± truncate or somewhat attenuate, faces obscurely 2-grooved, sometimes tuberculate-hispidulous; inner blackish, ± equally 4-angled, linear-fusiform, 7—16 mm, margins antrorsely hispidulous, apices ± attenuate, faces 2-grooved, tuberculate-hispidulous to sparsely strigillose; pappi 0, or of 2—3(—5), erect to divergent, retrorsely barbed awns (0.5—)2—4 mm. 2 n = 24, 36, 48, 72.

Flowering year round. Disturbed, wettish sites; 10—1900 m; Ont. Que.; Ala., Ariz., Calif., Conn., Fla., Ga., Ky., La., Md., Mass., Miss., Mo., N.Mex., N.C., Pa., S.C., Tex.; Mexico; Central America; introduced, Europe.

R. Ballard (1986) adopted a narrower circumscription of Bidens pilosa than that used here. He used: B. pilosa for plants with outer phyllaries 7—10, ray florets usually 0 (when present, laminae 2—3 mm), disc florets 35—75, pappi of 3(—5) awns 1—3 mm, and 2 n = 72; B. alba for plants with outer phyllaries (8—)12(—16), ray florets 5—8 (laminae 5—16 mm), pappi of 2 awns 1—2 mm, and 2 n = 48; and B. odorata for plants with outer phyllaries (6—)8(—12), ray florets 5—8 (laminae 3—18 mm), disc florets 12—61, pappi 0, or of 1—2 awns 1—3 mm, and 2 n = 24.

SELECTED REFERENCE

Ballard, R. 1986. Bidens pilosa complex (Asteraceae) in North and Central America. Amer. J. Bot. 73: 1452—1465.

Updated: 2020-09-24 05:48:27 gmt
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