Anthemis arvensis

Linnaeus

Sp. Pl. 2: 894. 1753.

Common names: Corn chamomile fausse camomille anthémis des champs
IntroducedIllustrated
Synonyms: Anthemis arvensis var. agrestis (Wallroth) de Candolle Chamaemelum arvense
Treatment appears in FNA Volume 19. Treatment on page 538.

Annuals (sometimes persisting), (5–) 10–30+ [–80] cm, not notably scented. Stems green or reddish, decumbent (sometimes rooting at nodes) or ascending to erect, branched mostly proximally, ± strigoso-sericeous or villous, glabrescent. Leaf-blades 15–35 × 8–16 mm, 1–2-pinnately lobed (ultimate lobes triangular to narrowly elliptic or linear). Peduncles mostly 4–15 cm (sometimes clavate in fruit). Involucres 6–13 mm diam., ± villous. Receptacles paleate throughout; paleae lanceolate to oblanceolate, weakly navicular (± carinate), 3–4+ mm (including acuminate-spinose tips). Ray-florets 5–20, pistillate, fertile; corollas white, rarely tinged with pink, laminae 5–15 mm. Disc corollas (sometimes tinged with purple) 2–3 (–4) mm. Cypselae 1.7–2+ mm, ribs smooth or weakly tuberculate (sometimes separated by relatively deep furrows); pappi 0 or coroniform (0.01+ mm). 2n = 18.


Phenology: Flowering May–Jul(–Sep).
Habitat: Disturbed sites, abandoned plantings
Elevation: 10–400+ m

Distribution

V19-936-distribution-map.gif

Introduced; B.C., N.B., Nfld. and Labr. (Nfld.), N.S., Ont., P.E.I., Que., Ala., Calif., Colo., Conn., Del., D.C., Fla., Ga., Idaho, Ill., Ind., Iowa, Ky., La., Maine, Md., Mass., Miss., Mo., Nebr., N.H., N.J., N.Y., N.C., N.Dak., Ohio, Oreg., Pa., R.I., S.C., Tenn., Vt., Va., Wash., W.Va., Wyo., Europe

Discussion

Anthemis arvensis is morphologically variable; it is found throughout much of North America.

Selected References

None.

Lower Taxa

None.

"broader" is not a number."+cm" is not declared as a valid unit of measurement for this property.

... more about "Anthemis arvensis"
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 +
Corn chamomile +, fausse camomille +  and anthémis des champs +
zygomorphic +, actinomorphic +  and (3-)5-merous +
tinged with pink +  and white +
winged +  and monomorphic +
obovoid +  and obconic or turbinate +
fertile +  and bisexual +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
0.2 cm2 mm <br />0.002 m <br /> (0.3 cm3 mm <br />0.003 m <br />) +
fertile +  and bisexual +
B.C. +, N.B. +, Nfld. and Labr. (Nfld.) +, N.S. +, Ont. +, P.E.I. +, Que. +, Ala. +, Calif. +, Colo. +, Conn. +, Del. +, D.C. +, Fla. +, Ga. +, Idaho +, Ill. +, Ind. +, Iowa +, Ky. +, La. +, Maine +, Md. +, Mass. +, Miss. +, Mo. +, Nebr. +, N.H. +, N.J. +, N.Y. +, N.C. +, N.Dak. +, Ohio +, Oreg. +, Pa. +, R.I. +, S.C. +, Tenn. +, Vt. +, Va. +, Wash. +, W.Va. +, Wyo. +  and Europe +
10–400+ m +
glabrous +, strigillose +  and villous +
pistillate +, staminate +  and neuter +
winged +  and beaked +
dispersed +
Disturbed sites, abandoned plantings +
in lax , corymbiform arrays +  and singly +
indeterminate +
heterogamous +  and homogamous +
each +  and sessile +
0.6 cm6 mm <br />0.006 m <br /> (1.3 cm13 mm <br />0.013 m <br />) +
obconic;hemispheric +
0.5 cm5 mm <br />0.005 m <br /> (1.5 cm15 mm <br />0.015 m <br />) +
1.5 cm15 mm <br />0.015 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
0.8 cm8 mm <br />0.008 m <br /> (1.6 cm16 mm <br />0.016 m <br />) +
sessile +  and petiolate +
triangular +
entire +  and dentate +
2-carpellate +
navicular;lanceolate;oblanceolate +
0.3 cm3 mm <br />0.003 m <br /> (0.4 cm4 mm <br />0.004 m <br />) +
scarious +  and indurate +
persistent +
coroniform +
4 cm40 mm <br />0.04 m <br /> (15 cm150 mm <br />0.15 m <br />) +
Flowering May–Jul(–Sep). +
21 +  and 35 +
bearing subulate enations +, hairy +  and bristly +
hemispheric;narrowly conic +
9 +  and 10 +
tuberculate +  and smooth +
exalbuminous +
Introduced +  and Illustrated +
reddish +  and green +
ascending +  and erect +
1 +  and 5 +
appendaged +  and truncate +
papillate +
Anthemis arvensis var. agrestis +  and Chamaemelum arvense +
Anthemis arvensis +
Anthemis +
species +
cylindric +
dentate +  and lobed +
10 cm100 mm <br />0.1 m <br /> (30 cm300 mm <br />0.3 m <br />) +
shrub +  and subshrub +