Reference:Wiegand1937a
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Verbatim text: Wiegand, K. M. and C. A. Weatherby. 1937. The nomenclature of the verticillate eupatoria. Rhodora 39: 297–306.
Author: Wiegand, K.M., Weatherby, C.A.
Year: 1937
Title: The nomenclature of the verticillate eupatoria
Journal: Rhodora
Volume: 39
Pages: 297–306