Known from 6 clones, this poorly understood plant is found in a restricted range in the Santa Rita Mountains, Pima and Cochise Counties, Arizona. ?Direct threats aren't known, however, its natural rarity is its biggest threats. ?More information is needed, including taxonomic, inventory, and chromosomal studies.
The primary threat to Agave schottii v. treleasei is its inherent rarity (USFWS 1976).
There is only a single occurrence of Agave schottii v. treleasei in habitat, located in the Santa Catalina Mountains (Phillips and Hodgeson 1991). This variety may be a polyploid of A. schottii v. schottii. Another possibility that is more likely is that plants here are hybrids between A. schottii. v. schottii and A. chrysantha or A. palmeri.
Management focus is on avoiding direct impacts. The Santa Catalina site is located in the Pursch Ridge Wilderness Area, on U.S. Forest Service land (Phillips and Hodgson 1991).
Taxonomic clarification is needed, and additional surveys are also needed. Chromosomal studies on plants from both sites (see notes) are needed, along with further electrophoretic work.
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