Cicuta maculata L.
other common names: beaver poison, cowbane, musquash root, spotted cowbane, spotted hemlock
Cicuta: the ancient Latin name for poison hemlock
Maculata: from Latin, meaning “spotted” or “mottled”
Parsley family: Apiaceae (Umbelliferae)
Wildflowers of the Tallgrass Prairie: The Upper Midwest, Second Edition, by Sylvan Runkel and Dean M. Roosa, photographs by Thomas Rosburg