Cotula

Cotula is a genus of flowering plant in the sunflower family.Linnaeus, Carl von. 1753.  Species Plantarum 2: 891-892 in LatinTropicos, Cotula L. It includes plants known as water buttons or buttonweeds.

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

References

Category:Asteraceae