Bidens vulgata

Greene

Pittonia 4: 72. 1899.

Common names: Bident vulgaire
Endemic
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

V21-516-distribution-map.gif

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., 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.

Selected References

None.

Lower Taxa

None.
... more about "Bidens vulgata"
not tailed +, rounded +  and obtuse +
dark +  and pale +
connate +  and distinct +
subequal +
scarious +
usually ovate +  and lanceolate +
usually deltate +  and lanceolate +
indeterminate +  and determinate +
John L. Strother +  and Ronald R. Weedon +
Greene +
ciliate +  and barbellate +
0.4 cm4 mm <br />0.004 m <br /> (0.7 cm7 mm <br />0.007 m <br />) +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
cuneate +
3-5-foliolate +  and 1-pinnatisect +
10 cm100 mm <br />0.1 m <br /> (15 cm150 mm <br />0.15 m <br />) +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
5 cm50 mm <br />0.05 m <br /> (10 cm100 mm <br />0.1 m <br />) +
less deltate;ovate +
30mm;80mm +
winged;ribbed;winged;ribbed +
tuberculate +  and rugose +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
2 cm20 mm <br />0.02 m <br /> (4 cm40 mm <br />0.04 m <br />) +
erect +  and spreading or reflexed +
1 cm10 mm <br />0.01 m <br /> (2 cm20 mm <br />0.02 m <br />) +
barbellulate +  and barbellate +
Bident vulgaire +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
stramineous +, olive +, brown +  and purplish +
obovate +  and cuneate +
fertile +  and bisexual +
fertile +  and bisexual +
sessile +  and petiolate +
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. +  and in Europe +
10–1000 m +
strigillose +, glabrous +  and hispidulous +
tuberculate +
linear-fusiform;4-angled;ovate;orbiculate;oblong;linear;cuneate +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Ditches, shores of lakes and streams, swamps, marshes, moist woods, roadsides, railroads, fields, waste areas +
discoid +  and radiate +
disciform +  and discoid +
in 2s or 3s or in open , corymbiform arrays +  and singly +
indeterminate +
homogamous +  and heterogamous +
each +  and sessile +
0.8 cm8 mm <br />0.008 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.4 cm4 mm <br />0.004 m <br /> (1.2 cm12 mm <br />0.012 m <br />) +
0.5 cm5 mm <br />0.005 m <br /> (0.6 cm6 mm <br />0.006 m <br />) +
hemispheric +
0.8 cm8 mm <br />0.008 m <br /> (1 cm10 mm <br />0.01 m <br />) +
pale-yellow +
0.25 cm2.5 mm <br />0.0025 m <br /> (0.35 cm3.5 mm <br />0.0035 m <br />) +
sessile +  and petiolate +
whorled +  and opposite +
deltate +
0.6 cm6 mm <br />0.006 m <br /> (1 cm10 mm <br />0.01 m <br />) +
2-carpellate +
less flat;slightly navicular +
persistent +
of 1-2 , smooth to ciliate or barbed awns or scales +  and coroniform +
1 cm10 mm <br />0.01 m <br /> (4 cm40 mm <br />0.04 m <br />) +
4 cm40 mm <br />0.04 m <br /> (15 cm150 mm <br />0.15 m <br />) +
1 cm10 mm <br />0.01 m <br /> (5 cm50 mm <br />0.05 m <br />) +
Flowering Aug–Sep(–Oct). +
connate +  and distinct +
10 +  and 12 +
0.6 cm6 mm <br />0.006 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (4 cm40 mm <br />0.04 m <br />) +
2 cm20 mm <br />0.02 m <br /> (8 cm80 mm <br />0.08 m <br />) +
1 cm10 mm <br />0.01 m <br /> (2.5 cm25 mm <br />0.025 m <br />) +
8 cm80 mm <br />0.08 m <br /> (12 cm120 mm <br />0.12 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (4 cm40 mm <br />0.04 m <br />) +
2 cm20 mm <br />0.02 m <br /> (8 cm80 mm <br />0.08 m <br />) +
styliferous +  and neuter +
bearing subulate enations +, hairy +  and bristly +
convex;flat +
exalbuminous +
appendaged +  and truncate +
hirsutulous +  and glabrous +
papillate +
Bidens frondosa var. puberula +, Bidens puberula +, Bidens vulgata var. dissectior +, Bidens vulgata var. puberula +  and Bidens vulgata var. schizantha +
Bidens vulgata +
species +
toothed +, serrate +, laciniate +  and dentate +
50 cm500 mm <br />0.5 m <br /> (150 cm1,500 mm <br />1.5 m <br />) +
30 cm300 mm <br />0.3 m <br /> (50 cm500 mm <br />0.5 m <br />) +
shrub +  and subshrub +