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Pterocaulon pycnostachyum
dense-spike blackroot Aster Family
Pterocaulon pycnostachyum Asteraceae
common name
  dense-spike blackroot
accepted scientific name
  Pterocaulon pycnostachyum (Michx.) Elliot
rules for finding collection records
  Pterocaulon pycnostachyum (322)
  Pterocaulon undulatum (8)
family name
Image Author: ©2012 Mary Keim
Image License: CC BY-NC-SA
Image Source
Category: Wildflowers
Flowers: No obvious petals
Petal colors: color
Leaf: Alternate
Plant Observed 2nd week of March thru 3rd week of November

How Likely at this Location (17%)
Name Match (100%)
Plant Showiness (36%)
base map where plant found
mag select

grid lines base