Compositae source details
University of Missouri Studies, Science Series 2(2):
330366
Publication
Date
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Cirsium erosum (Rydb.) Cockerell accepted as Cirsium scariosum var. coloradense (Rydb.) D.J.Keil (original description)
Cirsium griseum (Rydb.) Cockerell accepted as Cirsium clavatum var. americanum (A.Gray) D.J.Keil accepted as Cirsium scariosum var. americanum (A.Gray) D.J.Keil (original description)
Cirsium plattense (Rydb.) Cockerell accepted as Cirsium canescens Nutt. (original description)
Cirsium griseum (Rydb.) Cockerell accepted as Cirsium clavatum var. americanum (A.Gray) D.J.Keil accepted as Cirsium scariosum var. americanum (A.Gray) D.J.Keil (original description)
Cirsium plattense (Rydb.) Cockerell accepted as Cirsium canescens Nutt. (original description)
