Helen's ragweed
Helen's ragweed (ITIS, 2010) is a synonym English vernacular name for:
Ambrosia ×helenae Rouleau , an accepted species name sensu FNA Ed. Comm., 2006c.
Helen's ragweed (ITIS, 2010) is a synonym English vernacular name for:
Ambrosia ×helenae Rouleau , an accepted species name sensu FNA Ed. Comm., 2006c.