I believe this is Mammillaria grahamii.
Tags: alder canyon,cactus,cactus flower,coronado national forest,grahams nipple cactus,mammillaria,purple flower,santa catalina mountains

Tags: a7 ranch,arizona,arizona fishhook,arizona state trust land,grahams nipple cactus,mammillaria grahamii,pima county,redington pass,san pedro river valley,santa catalina mountains,state trust land,sunzia

Tags: a7 ranch,arizona,arizona fishhook,arizona state trust land,grahams nipple cactus,mammillaria grahamii,pima county,redington pass,san pedro river valley,santa catalina mountains,state trust land,sunzia

Tags: a7 ranch,arizona,arizona fishhook,arizona state trust land,grahams nipple cactus,mammillaria grahamii,pima county,redington pass,san pedro river valley,santa catalina mountains,state trust land,sunzia

Tags: arizona,arizona trail,bellota trail,coronado national forest,grahams nipple cactus,pima county,santa catalina mountains,santa catalina ranger district

Tags: agua caliente canyon trail,arizona,butterfly roadless area roadless area,coronado national forest,grahams nipple cactus,pima county,santa catalina mountains,santa catalina ranger district

Tags: agua caliente canyon trail,arizona,butterfly roadless area roadless area,coronado national forest,grahams nipple cactus,pima county,santa catalina mountains,santa catalina ranger district

Tags: arizona,butterfly roadless area roadless area,coronado national forest,grahams nipple cactus,pima county,santa catalina mountains,santa catalina ranger district,shindagger