Cotula

Cotula is a genus of flowering plant in the sunflower family.^[4][2] It includes plants known as water buttons or buttonweeds.

Cotula
Cotula coronopifolia
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Clade:	Eudicots
Clade:	Asterids
Order:	Asterales
Family:	Asteraceae
Supertribe:	Asterodae
Tribe:	Anthemideae
Genus:	Cotula L.
Type species
Cotula coronopifolia L.[1][2]
Synonyms[3]
Baldingeria Neck. Gymnogyne Steetz Peyrousea DC. Lancisia Lam. Pleiogyne K.Koch Strongylosperma Less. Cenia Comm. ex Juss. Cenia sect. Actinocenia DC. Hippia L.f. Ctenosperma Hook.f. Lancisia Fabr. Machlis DC. Otochlamys DC. Cotyla O.Kuntze & T. von Post

The species within this genus can be very different in their habit, leaf division, involucre, receptacle and achenes.