''Tripleurospermum'' is a genus in the chamomile tribe within the sunflower family. Mayweed is a common name for plants in this genus. Most of the species are from

Europe Europe is a large peninsula conventionally considered a continent in its own right because of its great physical size and the weight of its history and traditions. Europe is also considered a Continent#Subcontinents, subcontinent of Eurasia ...

and temperate

Asia Asia (, ) is one of the world's most notable geographical regions, which is either considered a continent in its own right or a subcontinent of Eurasia, which shares the continental landmass of Afro-Eurasia with Africa. Asia covers an area ...

although a few are from

North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...

and

North Africa North Africa, or Northern Africa is a region encompassing the northern portion of the African continent. There is no singularly accepted scope for the region, and it is sometimes defined as stretching from the Atlantic shores of Mauritania in ...

. The species are placed in '' Matricaria'' by some authors.Altervista Flora Italilana, Camomilla senza odore, ''Tripleurospermum inodorum'' (L.) Sch. Bip.
includes photos and distribution maps Plants typically have lobed leaves that are composed of one to three opposite pairs cut almost to the leaf mid rib: they have indehiscent one-celled fruits that have 3-ribs and two resinous glands at the base, '' Matricaria'' species are distinguished from these species by lacking fruits with 3-ribs and the two glands.

SpeciesFlann, C (ed) 2009+ Global Compositae Checklist

Formerly included

See '' Heteromera Matricaria Pyrethrum'' * ''Tripleurospermum breviradiatum - Matricaria breviradiata'' * ''Tripleurospermum fuscatum - Heteromera fuscata'' * ''Tripleurospermum philaenorum - Heteromera philaenorum'' * ''Tripleurospermum pulchrum - Pyrethrum pulchrum''

References

External links

* * {{Taxonbar, from=Q748153 Anthemideae Asteraceae genera