''Chamaemelum'' is a small genus of plants in the daisy family commonly known as chamomiles or dogfennels. Perhaps the best-known species is Roman chamomile, ''

Chamaemelum nobile ''Chamaemelum nobile'', commonly known as chamomile (also spelled camomile), is a low perennial plant found in dry fields and around gardens and cultivated grounds in Europe, North America, and South America. Its synonym is ''Anthemis nobilis ...

''. These are annual or perennial herbs, rarely exceeding half a meter in height and usually bearing solitary white daisylike flowers with yellow centers. They are native to Europe but most species can be found scattered in other continents where they have been introduced. The genus consists of only two species and is of the

Asteraceae Asteraceae () is a large family (biology), family of flowering plants that consists of over 32,000 known species in over 1,900 genera within the Order (biology), order Asterales. The number of species in Asteraceae is rivaled only by the Orchi ...

family. Embryo sac development in Chamaemelum differs from that of

Anthemis ''Anthemis'' is a genus of aromatic flowering plants in the family (biology), family Asteraceae, closely related to ''Chamaemelum'', and like that genus, known by the common name chamomile; some species are also called dog-fennel or mayweed. ''An ...

, with Chamaemelum exhibiting monosporic embryo sac formation, while all members of Anthemis have tetrasporic embryo sac. Anthemis and Chamaemelum have some differences in fruit and corolla structure, embryo sac development, and phytochemical data, and the closeness of their relationship has been debated. Chamaemelum was first mentioned by Linnaeus in ''Genera pIanta rum'' and had its generic name validated by Linnaeus in 1753 with the first edition of ''Species plantarum''. There was uncertainty surrounding the correct demarcation of the two genera, Anthemis (which used to be a name of Chamaemelum) and Anacyclus, for decades.

Species

Altervista Flora Italiana, genere Chamaemelum
includes photos and European distribution maps *'' Chamaemelum fuscatum'' (Brot.) Vasc. - dusky dogfennel -

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( UK),

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*''

'' ( L.) All. - Roman chamomile - much of

Europe Europe is a continent located entirely in the Northern Hemisphere and mostly in the Eastern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the west, the Mediterranean Sea to the south, and Asia to the east ...

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, and

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from

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References

External links

Jepson Manual Treatment
Anthemideae Asteraceae genera Taxa named by Philip Miller {{asteroideae-stub