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Pachycereus is a genus of about 12 species of large cacti native to Mexico and just into southern Arizona, USA. They form large shrubs or small trees up to 5–15 m or more tall, with stout stems up to 1 meter in diameter. Pachycereus comes from the ancient Greek "pakhus" meaning "thick" and the Latin "cereus" meaning "torch". The genus Pachycereus contains some of the largest growing cacti of all.
Pachycereus pringlei is a columnar cactus native to the Sonoran Desert that is the tallest of all cactus species. With specimens reportedly reaching 21 meters in height with a diameter of about 60cm, this species resembles the popular Giant Saguaro, Carnegiea gigantea but has fewer ribs. It bears white flowers that are pollinated by insects, birds and bats. Birds and bats are also responsible for spreading Pachycereus pringlei’s seed when they eat the fruit, which is also edible to humans. This fruit was used as a staple food by natives such as the Seri people of Sonora. Native people also utilized other parts of the cactus such as the seed, which they ground into flour, and the spines, which they used to make fishing spears. Additionally, the flesh was used medicinally as a disinfectant and a pain killer as well as for healing. |