Wheeler's Thistle

Cirsium wheeleri

"Cirsium wheeleri" is a North American species of plants in the tribe Cardueae within the family Asteraceae. Common names include Wheeler's thistle. It is native to northern Mexico and the southwestern United States.
Wheelers Thistle or Cirsium wheeleri  Cirsium wheeleri,Geotagged,Summer,United States

Appearance

"Cirsium wheeleri" is a perennial herb up to 60 cm tall with a large taproots. Leaves have slender spines. There are one or more flower heads, each with white, pink, or pale purple disc florets but no ray florets. The plant grows in mountain meadows and open conifer forests.

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Taxonomy
KingdomPlantae
DivisionAngiosperms
ClassEudicots
OrderAsterales
FamilyAsteraceae
GenusCirsium
SpeciesC. wheeleri