Distribution and habitat. Hechtia isthmusiana is known only from the vicinity of the Isthmus of Tehuantepec where it grows terrestrially or epilithically on low rocky hillsides in full sun on boulders or areas shaded with thorn-scrub vegetation and tropical deciduous forests including Plumeria and Bursera at elevations between 200–600 ft. —SeeBurt-Utley 2012
