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Source: Pachycereus pringlei

Pachycereus pringlei (also known as Mexican giant cardon or elephant cactus) is a species of large cactus native to northwestern Mexico, in the states of Baja California, Baja California Sur, and Sonora. It is commonly known as cardón, a name derived from the Spanish word cardo, meaning "thistle"; additionally, it is often referred to as sabueso (or “bloodhound”), which is possibly an early Spanish interpretation of the native Seri term for the plant, xaasj.
Large stands of this cactus still exist, but many have been destroyed as land has been cleared for cultivation in Sonora.
Climate change will likely impact the future distribution of numerous plant species, including Pachycereus pringlei, which can be attributed to alterations in precipitation and temperature.
The cactus fruits were always an important food for the Seri people, in Sonora; the dried cactus columns themselves could be used for construction purposes, as well as for firewood.
A symbiotic relationship with bacterial and fungal colonies, on its roots, allows P. pringlei to grow on bare rock, even where no soil is available at all; the cactus has the distinction of being lithophytic as needed. The root’s bacterial colonies can fix nitrogen from the air and break down the rock to expose hidden sources of nutrients. The cactus even evolved to maintain this symbiotic bacteria within its seeds, serving to benefit by taking it on as part of its very physical biology.