Pachycereus is a genus of large cacti native to Central America and Mexico.[1] They form large shrubs or small trees up to 15 m tall, with stout stems up to 1 m in diameter. Pachycereus comes from the ancient Greek παχύς (pachys) meaning "thick" and the Latin cereus meaning "torch".
P. pringlei is the tallest cactus species in the world, with a maximum recorded height of 19.2 m.[2]
Synonymy
These genera have been brought into synonymy with Pachycereus by some sources,[citation needed] although as of October 2023[update], not by Plants of the World Online:[1]