Common Name: horseweed, mare's-tailScientific Name: Conyza canadensis (L.) Cronq. syn. Erigeron canadensisFamily Name: Asteraceae (Compositae) - Aster or Sunflower FamilyIdentification NotesLife Cyclenative winter or summer annual, reproducing by seed Stemsreproductive, upright, tall, very leafy, hairy, branched above Leavesalternate, linear, hairy, toothed margins or sometimes entire, rosette initially, small above, crowded, sessile Flowersheads of white (sometimes very light pink) ray (ligulate) florets and yellow disk (tubulate) florets in center