Xanthium Linnaeus. Cocklebur.
A genus of about 3-20 or more species, herbs, cosmopolitan (of somewhat uncertain original distribution).
ID notes: Mature burs are needed for the identification of most species.
Ref: Cronquist (1980); Fernald (1946); Löve & Dansereau (1959); Millspaugh & Sherff (1919); Strother (2006ee) In Flora of North America Editorial Committee (2006b); Tomasello (2018). Show full citations.
Hover over a shape, letter, icon, or arrow on the map to see what it means. Data for arrows not developed for genera and families which may have species only occurring outside the flora area.
© Gary P. Fleming | 
© J.W. Hardin | 
© Bruce A. Sorrie |