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Parthenium hysterophorus
Santa Maria feverfew Aster Family
Parthenium hysterophorus Asteraceae
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common names
  Santa Maria feverfew
  ragweed parthenium
  whitetop weed
accepted scientific name
  Parthenium hysterophorus L.
rules for finding collection records
  Parthenium hysterophorus (563)
  exclude Parthenium hysterophorus lyratum
family name
  Asteraceae
Image Author: ©2013 Forest And Kim Starr
Image License: CC BY
Image Source Image Source
Category: Wildflowers
Flowers: No obvious petals
Petal colors: color
Leaf: Alternate
Plant Observed All Year

How Likely at this Location (19%)
Name Match (100%)
Plant Showiness (36%)
base map where plant found

Disturbed
Forest
Riparian
grid lines base