Verbatim text: Nesom, G. L. 1990c. Further definition of Conyza (Asteraceae: Astereae). Phytologia 68: 229–233.
Author: Nesom, G.L.
Year: 1990c
Title: Further definition of Conyza (Asteraceae: Astereae)
Journal: Phytologia
Volume: 68
Pages: 229–233
BHL link: http://www.biodiversitylibrary.org/part/16712