Dioon spinulosum Dyer ex Eichl., Gart.-Zeitung (Berlin) 1883: 411 1883.; . Mexico (Veracruz, Oaxaca) as per POWO; . Dioon spinulosum, giant dioon, or gum palm, is a cycad endemic to limestone cliffs and rocky hillsides in the tropical rainforests of Veracruz and Oaxaca, Mexico.[1][2] It is one of the tallest cycads in the world, growing […]
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