Reference:Semple1980e


Verbatim text: Semple, J. C., V. Blok, and P. Heiman. 1980. Morphological, anatomical, habit, and habitat differences among the goldenaster genera Chrysopsis, Heterotheca and Pityopsis (Compositae–Astereae). Canad. J. Bot. 58: 147–163.
Author: Semple, J.C., Blok, V., Heiman, P.
Year: 1980
Title: Morphological, anatomical, habit, and habitat differences among the goldenaster genera Chrysopsis, Heterotheca and Pityopsis (Compositae–Astereae)
Journal: Canad. J. Bot
Volume: 58
Pages: 147–163

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Semple, J.C. +, Blok, V. +  and Heiman, P. +