Reference:Semple2005a


Verbatim text: Semple, J. C. and J. L. A. Hood. 2005. Pappus variation in North American Asters. I. Double, triple and quadruple pappus in Symphyotrichum and related aster genera (Asteraceae: Astereae). Sida 21: 2141–2159.
Author: Semple, J.C., Hood, J.L.A.
Year: 2005
Title: Pappus variation in North American Asters. I. Double, triple and quadruple pappus in Symphyotrichum and related aster genera (Asteraceae: Astereae)
Journal: Sida
Volume: 21
Pages: 2141–2159

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