Difference between revisions of "Bidens pilosa"
Sp. Pl. 2: 832. 1753.
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|name=Bidens alba | |name=Bidens alba | ||
|authority=(Linnaeus) de Candolle | |authority=(Linnaeus) de Candolle | ||
+ | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Bidens alba var. radiata | |name=Bidens alba var. radiata | ||
|authority=(Schultz-Bipontinus) R. E. Ballard | |authority=(Schultz-Bipontinus) R. E. Ballard | ||
+ | |rank=variety | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Bidens odorata | |name=Bidens odorata | ||
− | |authority= | + | |authority= |
+ | |rank=species | ||
}} {{Treatment/ID/Synonym | }} {{Treatment/ID/Synonym | ||
|name=Bidens pilosa var. radiata | |name=Bidens pilosa var. radiata | ||
|authority=(Schultz-Bipontinus) Schultz-Bipontinus | |authority=(Schultz-Bipontinus) Schultz-Bipontinus | ||
+ | |rank=variety | ||
}} | }} | ||
|hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Coreopsidinae;Bidens;Bidens pilosa | |hierarchy=Asteraceae;Asteraceae tribe Heliantheae;Asteraceae (tribe Heliantheae) subtribe Coreopsidinae;Bidens;Bidens pilosa | ||
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|discussion=<p>R. Ballard (1986) adopted a narrower circumscription of <i>Bidens pilosa</i> than that used here. He used: <i>B. pilosa</i> 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 2n = 72; <i>B. alba</i> for plants with outer phyllaries (8–)12(–16), ray florets 5–8 (laminae 5–16 mm), pappi of 2 awns 1–2 mm, and 2n = 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 2n = 24.</p> | |discussion=<p>R. Ballard (1986) adopted a narrower circumscription of <i>Bidens pilosa</i> than that used here. He used: <i>B. pilosa</i> 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 2n = 72; <i>B. alba</i> for plants with outer phyllaries (8–)12(–16), ray florets 5–8 (laminae 5–16 mm), pappi of 2 awns 1–2 mm, and 2n = 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 2n = 24.</p> | ||
|tables= | |tables= | ||
− | |references= | + | |references= |
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-->{{#Taxon: | -->{{#Taxon: | ||
name=Bidens pilosa | name=Bidens pilosa | ||
− | |||
|authority=Linnaeus | |authority=Linnaeus | ||
|rank=species | |rank=species | ||
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|distribution=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;Europe. | |distribution=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;Europe. | ||
|introduced=true | |introduced=true | ||
− | |reference= | + | |reference=None |
|publication title=Sp. Pl. | |publication title=Sp. Pl. | ||
|publication year=1753 | |publication year=1753 | ||
|special status= | |special status= | ||
− | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/ | + | |source xml=https://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/eaa6e58056e40c9ef614d8f47aea294977a1a5e9/coarse_grained_fna_xml/V19-20-21/V21_513.xml |
|tribe=Asteraceae tribe Heliantheae | |tribe=Asteraceae tribe Heliantheae | ||
|subtribe=Asteraceae (tribe Heliantheae) subtribe Coreopsidinae | |subtribe=Asteraceae (tribe Heliantheae) subtribe Coreopsidinae |
Revision as of 20:37, 16 December 2019
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. 2n = 24, 36, 48, 72.
Phenology: Flowering year round.
Habitat: Disturbed, wettish sites
Elevation: 10–1900 m
Distribution
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, Europe.
Discussion
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 2n = 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 2n = 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 2n = 24.
Selected References
None.