Reference:Nesom1990e
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Verbatim text: Nesom, G. L. 1990e. Taxonomy of Heterotheca sect. Heterotheca (Asteraceae: Astereae) in Mexico, with comments on the taxa in the United States. Phytologia 69: 282–294.
Author: Nesom, G.L.
Year: 1990e
Title: Taxonomy of Heterotheca sect. Heterotheca (Asteraceae: Astereae) in Mexico, with comments on the taxa in the United States
Journal: Phytologia
Volume: 69
Pages: 282–294
BHL link: http://www.biodiversitylibrary.org/part/9523