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Xanthisma grindelioides
rayless tansyaster Aster Family
Xanthisma grindelioides Asteraceae
common names
  rayless tansyaster
  gumweed aster
accepted scientific name
  Xanthisma grindelioides (Nutt.) D.R. Morgan & R.L. Hartm.
rules for finding collection records
  Haplopappus nuttallii (31)
  Machaeranthera grindelioides (421)
  Xanthisma grindelioides (984)
family name
Image Author: ©2005 Christopher L. Christie
Image License: Author's permission
Image Source
Category: Wildflowers
Flowers: No obvious petals
Petal colors: color
Flower size is .2 to .35 inches
Number of ray petals: 0
Leaf: Alternate
Plant Observed 2nd week of May thru end of September

How Likely at this Location (41%)
Name Match (100%)
Plant Showiness (36%)
Links to Plant Photos
SW Colorado Wildflowers (7)
Cal Photos (11)
Wikimedia Commons (4)
Cal Photos (3)
base map where plant found
mag select

grid lines base