Stiff Cowbane Oxypolis rigidior (Linaneus) Rafinesque    Synonyms: Oxypolis rigidor var. longifolia, Oxypolis turgida.
Kingdom Plantae   >   Division Tracheophyta   >   Class Magnoliopsida   >   Order Apiales   >   Family Apiaceae   >   Genus Oxypolis   
Stiff Cowbane blooming in Worcester Co., Maryland (8/29/2013). Photo by Jim Stasz. (MBP list)

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