Verbatim text: Nesom, G. L. 2004e. Taxonomic reevaluations in North American Erigeron (Asteraceae: Astereae). Sida 21: 19–40.
Author: Nesom, G.L.
Year: 2004e
Title: Taxonomic reevaluations in North American Erigeron (Asteraceae: Astereae)
Journal: Sida
Volume: 21
Pages: 19–40