Synonyms recognized by ITIS (bold taxon is currently accepted):

     Polymnia canadensis L.
     Polymnia canadensis var. radiata Gray
     Polymnia radiata (Gray) Small

Common Name(s): rayless leafcup, whiteflower leafcup.

Taxonomic Hierarchy: (ITIS TSN=36438, click for more information and references)

        Kingdom: Plantae
            Subkingdom: Tracheobionta
                Division: Magnoliophyta
                    Class: Magnoliopsida
                        Subclass: Asteridae
                            Order: Asterales
                                Family: Asteraceae
                                    Genus: Polymnia
                                        Species: Polymnia canadensis