Common Name: common ragweed , hayfever weedScientific Name: Ambrosia artemisiifolia L.Family Name: Asteraceae (Compositae) - Aster or Sunflower FamilyIdentification NotesLife Cyclenative annual, reproducing by seed Stemsupright, hairy, rough Leaveshighly dissected, opposite below, alternate above Flowersheads of green disc (tubulate) florets; male flowers in inverted receptacle, terminal racemes; female flowers axillary above