Echinacea paradoxa

Echinacea paradoxa, the yellow coneflower or Bush's purple coneflower, is a North American species of flowering plant in the sunflower family. It is native to southern Missouri, Arkansas, and south-central Oklahoma, with one isolated population reported from Montgomery County in eastern Texas. It is listed as threatened in Arkansas.
"Echinacea paradoxa" is a perennial herb up to 90 cm (3 feet) tall. One plant can produce several flower heads, each with white, pink, or yellow ray florets and pink or yellow disc florets.
"Echinacea paradoxa" var. "paradoxa" has a baseline chromosome number of x = 11, like most "Echinacea" plants.