Reference:Northington1974a
Verbatim text: Northington, D. K. 1974. Systematic studies of the genus Pyrrhopappus (Compositae, Cichorieae). Special Publ. Mus. Texas Tech Univ. 6: 1–38.
Author: Northington, D.K.
Year: 1974
Title: Systematic studies of the genus Pyrrhopappus (Compositae, Cichorieae)
Journal: Special Publ. Mus. Texas Tech Univ
Volume: 6
Pages: 1–38
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