Common Ragweed |
Common Ragweed |
Ambrosia artemisiifolia |
Aster or Composite Family - Asteraceae |
An upright (1 to 4 feet tall), much branched herb with hairy stems. Leaves much dissected,
alternate and pale green. Stems terminate in elongated clusters (2 to
6 inches long) of what are mainly male flowers with single or small groups of
greenish female flowers at the base of the male clusters. Male flowerheads as groups
of yellow-green disk flowers (prominent pollen-bearing yellow stamens), which
are stalked and dependent. (Photographed - late August) |
� Pathology Images Inc. 2000 to 2002 |