Bidens vulgata

Greene

Pittonia4: 72. 1899

Common names: Bident vulgaire
Synonyms: Bidens frondosa var. puberula Wiegand Bidens puberula (Wiegand) Rydberg Bidens vulgata var. dissectior Sherff Bidens vulgata var. puberula (Wiegand) Greene Bidens vulgata var. schizantha Lunell
Treatment appears in FNA Volume 21. Treatment on page 212. Mentioned on page 207, 211.
Annuals, (15–)30–50(–150) cm. Leaves: petioles 10–50 mm; blades ± deltate to ovate overall, 50–100(–150+) × (15–)30–80(–120+) mm, usually laciniately 1-pinnatisect or 3–5-foliolate, primary lobes or leaflets ± lanceolate, 20–80(–120) × 10–25(–40+) mm, blades rarely 2–3-pinnatisect, bases cuneate, ultimate margins dentate to serrate, little, if at all, ciliate, apices acute to attenuate, faces glabrous or ± hispidulous. Heads borne singly or in 2s or 3s or in open, corymbiform arrays, erect. Peduncles (10–)40–150+ mm. Calyculi of 10–16(–21) ascending to spreading, spatulate to linear, seldom foliaceous bractlets or bracts 10–20(–40) mm, margins usually hispid-ciliate, abaxial faces ± hispidulous. Involucres hemispheric or broader, 5–6 × 8–10 mm. Phyllaries 10–12, ovate to lanceolate, 6–9 mm. Ray florets 0 or 3–5+; laminae pale yellow, 2.5–3.5 mm. Disc florets 40–60(–150+); corollas yellow, 2.5–3.5 mm. Cypselae purplish, brown, olive, or stramineous, ± flattened, obovate to cuneate, outer 6–10 mm, inner 8–12 mm, margins (sometime ± winged) proximally antrorsely, distally retrorsely barbed, apices ± truncate, faces obscurely 1-nerved, sometimes tuberculate, glabrous or sparsely strigillose; pappi of 2 erect to divergent, retrorsely barbed awns 3–4(–7) mm. 2n = 24, 48.

Phenology: Flowering Aug–Sep(–Oct).
Habitat: Ditches, shores of lakes and streams, swamps, marshes, moist woods, roadsides, railroads, fields, waste areas
Elevation: 10–1000 m

Distribution

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Alta., B.C., Man., N.B., N.S., Ont., Que., Sask., Ark., Calif., Colo., Conn., Del., D.C., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., Maine, Md., Mass., Mich., Minn., Miss., Mo., Mont., Nebr., Nev., N.H., N.J., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., R.I., S.C., S.Dak., Tenn., Vt., Va., Wash., W.Va., Wis., Wyo., introduced in Europe.

Discussion

Bidens vulgata is similar to B. frondosa; it is more robust. Both are phenotypically plastic. Locally, B. vulgata often matures earlier than B. frondosa.

References

None.

Lower Taxa

No lower taxa listed.

Facts about "Bidens vulgata"
AuthorJohn L. Strother + and Ronald R. Weedon +
AuthorityGreene +
Common nameBident vulgaire +
DistributionAlta. +, B.C. +, Man. +, N.B. +, N.S. +, Ont. +, Que. +, Sask. +, Ark. +, Calif. +, Colo. +, Conn. +, Del. +, D.C. +, Ga. +, Idaho +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, Maine +, Md. +, Mass. +, Mich. +, Minn. +, Miss. +, Mo. +, Mont. +, Nebr. +, Nev. +, N.H. +, N.J. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Okla. +, Oreg. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. +, Wyo. + and introduced in Europe. +
Elevation10–1000 m +
HabitatDitches, shores of lakes and streams, swamps, marshes, moist woods, roadsides, railroads, fields, waste areas +
Illustration copyrightFlora of North America Association +
IllustratorYevonn Wilson-Ramsey +
PhenologyFlowering Aug–Sep(–Oct). +
Publication titlePittonia +
Publication year1899 +
ReferenceNone +
Source xmlhttps://jpend@bitbucket.org/aafc-mbb/fna-data-curation.git/src/f50eec43f223ca0e34566be0b046453a0960e173/coarse grained fna xml/V19-20-21/V21 516.xml +
SynonymsBidens frondosa var. puberula +, Bidens puberula +, Bidens vulgata var. dissectior +, Bidens vulgata var. puberula + and Bidens vulgata var. schizantha +
Taxon familyAsteraceae +
Taxon nameBidens vulgata +
Taxon parentBidens +
Taxon rankspecies +
VolumeVolume 21 +