References

For Tripleurospermum

Arriagada, J.E., and N.G. Miller. 1997. The genera of Anthemidae (Compositae; Asteraceae) in the southeastern United States. Harvard Papers in Botany 2: 1-46. Google Scholar

Brouillet, L. 2006c. Tripleurospermum. In Flora of North America Editorial Committee. 2006a. Flora of North America north of Mexico. Volume 19, Magnoliophyta: Asteridae, part 6: Asteraceae, part 1. Oxford Univ. Press, New York, NY. 579 pp. Google Scholar