Pachycereus (Pachycereus)
Description
Pachycereus is a genus of 9-12 species of large cacti native to Mexico and just into southern Arizona, United States. They form large shrubs or small trees up to 15 m or more tall, with stout stems up to 1 m in diameter. Pachycereus comes from the ancient Greek pakhus meaning "thick" and the Latin cereus meaning "torch".
Taxonomic tree
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Domain: Eukarya
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Kingdom: Plantae
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Phylum: Magnoliophyta
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Class: Magnoliopsida
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Order: Caryophyllales
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Family: Cactaceae
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Genus: Pachycereus
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