Spraguea umbellata Torr. in Smithsonian Contr. Knowl. 6(2): 4. 1853 Spraguea umbellata Torr. in Smithsonian Contr. Knowl. 6(2): 4. 1853Taxon for this nameSpraguea umbellata Torr. in Smithsonian Contr. Knowl. 6(2): 4. 1853
