Common Name: cockleburScientific Name: Xanthium strumarium L.Family Name: Asteraceae (Compositae) - Aster or Sunflower FamilyIdentification NotesLife Cyclenative annual, reproducing by seed Stemsupright, coarse hair, ridged, frequently spotted purplish black Leavesalternate, ovate to triangular, wavy or irregularly toothed margins, rough-textured above and below, long petioled Flowersgreenish, small, male and female separate, two female in oval bur; clusters, terminal and axillary Seed Podsoval to oblong, hooked prickles, two curved spines at tip