Cirsium wheeleri
Cirsium wheeleri is a North American species of plants in the thistle tribe within the sunflower family. Common names include Wheeler's thistle. It is native to northern Mexico (Chihuahua, Sonora) and the southwestern United States (Arizona, New Mexico, Colorado, Utah, Nevada). "Cirsium wheeleri" is a perennial herb up to 60 cm (2 feet) 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.