Spiny cocklebur

(Xanthium spinosum)

 

State of Colorado ImageState of Colorado ImageState of Colorado ImageState of Colorado Image
© John Randall
© Robert Videki
© John Randall
© Beatrice Howitt
  • 1 - 4' tall by 1 - 4' wide.
  • Blooms June to July.
  • Flowers 1 - 1 1/2"; creamy green.
  • Stem straight & ridgid.
  • Leaves alternate, up to 3" long & 1 1/2" wide.
  • 3-lobed; shiny female flowers become burrs which are the fruits; egg-shaped.