Reference:Semple1980a
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Verbatim text: Semple, J. C. and L. Brouillet. 1980. A synopsis of North American asters: The subgenera, sections and subsections of Aster and Lasallea. Amer. J. Bot. 67: 1010–1026.
Author: Semple, J.C., Brouillet, L.
Year: 1980
Title: A synopsis of North American asters: The subgenera, sections and subsections of Aster and Lasallea
Journal: Amer. J. Bot
Volume: 67
Pages: 1010–1026