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Cirsium altissimum
tall thistle Aster Family
Cirsium altissimum Asteraceae
common names
  tall thistle
  roadside thistle
accepted scientific name
  Cirsium altissimum (L.) Hill
rules for finding collection records
  Cirsium altissimum (1564)
family name
Image Author: ©2012 Eric Hunt
Image License: Author's permission
Image Source
Category: Wildflowers
Flowers: No obvious petals, Many petals
Petal colors: color color
Flower size is 1.5 to 2. inches
Leaf: Alternate, Basal
Plant Observed 2nd week of July thru 3rd week of October

How Likely at this Location (43%)
Name Match (100%)
Plant Showiness (72%)
base map where plant found
mag select

grid lines base