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 and temperate Asia although a few are from North America and North Africa. The species are placed in Matricaria by some authors. see Heteromera Matricaria Pyrethrum \n* Tripleurospermum breviradiatum - Matricaria breviradiata \n* Tripleurospermum fuscatum - Heteromera fuscata \n* Tripleurospermum philaenorum - Heteromera philaenorum \n* Tripleurospermum pulchrum - Pyrethrum pulchrum