Common Name: yarrow, milfoil, thousandleafScientific Name: Achillea millefolium L.Family Name: Asteraceae (Compositae) - Aster or Sunflower FamilyIdentification NotesLife Cycleintroduced perennial, reproducing by seed and rhizomes Stemsupright, branching, hairy Leavesalternate, lanceloate, divided (2 to 4 times pinnatified), hairy, lacy appearance Flowersheads of white ray (ligulate) and yellow disk (tubulate) florets; clusters terminal, nearly flat-topped