Anthemis cotula

Linnaeus

Sp. Pl. 2: 894. 1753.

Common names: Mayweed stinking chamomile camomille maroute
Introduced
Synonyms: Anthemis foetida Lamarck Chamaemelum cotula (Linnaeus) Allioni Maruta cotula (Linnaeus) de Candolle
Treatment appears in FNA Volume 19. Treatment on page 538. Mentioned on page 542.

Annuals, (5–) 15–35 (–90) cm, usually ill-scented. Stems green (sometimes red-tinged), usually erect, branched mostly distally or ± throughout, glabrous, glabrate, puberulent, or sparsely strigillose to strigoso-sericeous (glabrescent, hairs mostly medifixed) and gland-dotted. Leaf-blades 25–55 × 15–30 mm, 1–2-pinnately lobed. Peduncles mostly (2–) 4–6 (–15) cm. Involucres 5–9 mm diam., ± villosulous to arachnose. Receptacles paleate mostly distally; paleae subulate to acerose 2–3+ mm (often gland-dotted). Ray-florets 10–15, styliferous and sterile; corollas white, laminae 5–15+ mm. Disc corollas 2–2.5 mm (sparsely gland-dotted). Cypselae 1.3–2 mm, ribs ± tuberculate (furrows often gland-dotted); pappi 0.2n = 18.


Phenology: Flowering (Apr–)May–Aug(–Oct).
Habitat: Disturbed sites, clearings, fields, roadsides
Elevation: 10–600(–1500+) m

Distribution

V19-937-distribution-map.gif

Introduced; Alta., B.C., Man., N.B., Nfld. and Labr. (Nfld.), N.S., Ont., P.E.I., Que., Sask., Yukon, Ala., Alaska, Ariz., Ark., Calif., Colo., Conn., Del., D.C., Fla., Ga., Idaho, Ill., Ind., Iowa, Kans., Ky., La., Maine, Md., Mass., Minn., Miss., Mo., Mont., Nebr., Nev., N.H., N.J., N.Mex., N.Y., N.C., N.Dak., Ohio, Okla., Oreg., Pa., R.I., S.C., S.Dak., Tenn., Tex., Utah, Vt., Va., Wash., W.Va., Wis., Wyo., Eurasia

Discussion

Anthemis cotula is a weed throughout North America.

Selected References

None.

Lower Taxa

None.

"broader" is not a number.

... more about "Anthemis cotula"
not tailed +  and obtuse +
scarious +
spiciform +, racemiform +, paniculiform +  and corymbiform +
indeterminate +  and determinate +
Linda E. Watson +
Linnaeus +
decurrent +
compound +  and simple +
lobed;less obovate;spatulate +
Mayweed +, stinking chamomile +  and camomille maroute +
zygomorphic +, actinomorphic +  and (3-)5-merous +
winged +  and monomorphic +
obovoid +  and obconic or turbinate +
fertile +  and bisexual +
0.2 cm2 mm <br />0.002 m <br /> (0.25 cm2.5 mm <br />0.0025 m <br />) +
fertile +  and bisexual +
Alta. +, B.C. +, Man. +, N.B. +, Nfld. and Labr. (Nfld.) +, N.S. +, Ont. +, P.E.I. +, Que. +, Sask. +, Yukon +, Ala. +, Alaska +, Ariz. +, Ark. +, Calif. +, Colo. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Idaho +, Ill. +, Ind. +, Iowa +, Kans. +, Ky. +, La. +, Maine +, Md. +, Mass. +, Minn. +, Miss. +, Mo. +, Mont. +, Nebr. +, Nev. +, N.H. +, N.J. +, N.Mex. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Okla. +, Oreg. +, Pa. +, R.I. +, S.C. +, S.Dak. +, Tenn. +, Tex. +, Utah +, Vt. +, Va. +, Wash. +, W.Va. +, Wis. +, Wyo. +  and Eurasia +
10–600(–1500+) m +
glabrous +, strigillose +  and villous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Disturbed sites, clearings, fields, roadsides +
in lax , corymbiform arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.5 cm5 mm <br />0.005 m <br /> (0.9 cm9 mm <br />0.009 m <br />) +
less villosulous +  and arachnose +
obconic;hemispheric +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
2.5 cm25 mm <br />0.025 m <br /> (5.5 cm55 mm <br />0.055 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (3 cm30 mm <br />0.03 m <br />) +
sessile +  and petiolate +
triangular +
entire +  and dentate +
2-carpellate +
subulate;acerose +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
scarious +  and indurate +
persistent +
coroniform +
6 cm60 mm <br />0.06 m <br /> (15 cm150 mm <br />0.15 m <br />) +
4 cm40 mm <br />0.04 m <br /> (6 cm60 mm <br />0.06 m <br />) +
Flowering (Apr–)May–Aug(–Oct). +
21 +  and 35 +
bearing subulate enations +, hairy +  and bristly +
hemispheric;narrowly conic +
9 +  and 10 +
tuberculate +
exalbuminous +
Introduced +
gland-dotted +  and green +
1 +  and 5 +
appendaged +  and truncate +
papillate +
Anthemis foetida +, Chamaemelum cotula +  and Maruta cotula +
Anthemis cotula +
Anthemis +
species +
cylindric +
dentate +  and lobed +
35 cm350 mm <br />0.35 m <br /> (90 cm900 mm <br />0.9 m <br />) +
15 cm150 mm <br />0.15 m <br /> (35 cm350 mm <br />0.35 m <br />) +
shrub +  and subshrub +