Escobaria missouriensis
 Escobaria missouriensis the Missouri foxtail cactus and formerly Coryphantha missouriensis is a species of low-growing North American cacti. It is found in along the Missouri River in the tallgrass prairie and shortgrass Great Plains from Arkansas to Montana and in the Rocky Mountains woodlands of Ponderosa pine (Pinus ponderosa) pinyon-juniper and Gambel oak (Quercus gambelii) west of it. It is also native to the Southwestern United States from Arizona to Texas.