Dioon edule, the chestnut dioon, is a cycad native to Mexico, also known as palma de la virgen. Cycads are among the oldest seed plants and even pre-date the dinosaurs. It belongs to the Zamiaceae plant family within the order Cycadales. The genus name "Dioon" means "two-egged", referring to the two ovules.
Ceratozamia becerrae is a species of plant in the family Zamiaceae.
Ceratozamia euryphyllidia is a species of plant in the family Zamiaceae. It is found in Guatemala and in the Mexican state of Oaxaca and Veracruz. It is threatened by habitat loss.
Ceratozamia kuesteriana is a species of cycad in the family Zamiaceae that is endemic to the Sierra Madre Oriental of Mexico.
Ceratozamia latifolia is a species of cycad in the family Zamiaceae that is endemic to Querétaro, Hidalgo and San Luis Potosí in Mexico. It inhabits cloud zone oak forests in the Sierra Madre Oriental.
Ceratozamia miqueliana is a species of plant in the family Zamiaceae. It is endemic to Chiapas and Veracruz, Mexico. It is currently found in Coatzacoalcos and Santiago Tuxtla. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.
Ceratozamia mixeorum is a species of plant in the family Zamiaceae. It is endemic to the Sierra Mixe of Oaxaca state in southern Mexico. Its natural habitat is subtropical or tropical moist montane forests.
Ceratozamia norstogii is a species of plant in the family Zamiaceae. It is endemic to the Sierra Madre de Chiapas, in Chiapas and Oaxaca states of southwestern Mexico. It is an Endangered species, threatened by habitat loss.
Ceratozamia robusta is a species of plant in the family Zamiaceae. It is found in Belize, Guatemala, and Mexico. Its natural habitat is subtropical or tropical moist lowland forests. It is threatened by habitat loss.
Ceratozamia whitelockiana is a species of plant in the family Zamiaceae. It is endemic to Mexico, where it is known only from Metates and Chiapan in Oaxaca state. Only two subpopulations have been found, with a total population of about 2200 individuals. The habitat is threatened by conversion to plantations using slash-and-burn techniques.
Ceratozamia zaragozae is a species of plant in the family Zamiaceae. It is endemic to the Rio Verde in El Capulín, San Luis Potosí state in northeastern Mexico. It is a Critically endangered species, threatened by habitat loss. It is found southwest of the Rio Verde, in Capulin district.
Zamia inermis is a species of plant in the family Zamiaceae. It is endemic to Actopan, Veracruz state, in eastern Mexico. It is a Critically endangered species, threatened by habitat loss.
Zamia loddigesii is a species of plant in the family Zamiaceae. It is found in Guatemala and Mexico. It is threatened by habitat loss.
Zamia purpurea is a species of plant in the family Zamiaceae. It is endemic to Mexico, where it occurs only in the states of Oaxaca and Veracruz. It grows in the understory of rainforests. It is affected by habitat destruction.
Zamia spartea is a species of plant in the family Zamiaceae. It is endemic to the Isthmus of Tehuantepec region of Chiapas state, southern Mexico, and may also exist in Oaxaca state. It is threatened by habitat loss.
Dioon tomasellii is a species of cycad in the family Zamiaceae. It is endemic to Mexico, where it occurs in the states of Durango, Guerrero, Jalisco, Michoacán, and Nayarit.
Dioon califanoi is a species of cycad that is native to Oaxaca and Puebla states, Mexico. It is found near Teotitlán del Camino and Huautla de Jiménez.
Dioon merolae is a species of cycad that is native to Chiapas and Oaxaca, Mexico. It is known from the municipalities of Cintalapa and Villaflores in Chiapas, and from the Sierra Juárez, Oaxaca.
Dioon angustifolium is a species of cycad that is endemic to Tamaulipas and Nuevo León, Mexico.
Dioon caputoi is a species of cycad that is native to the state of Puebla, Mexico. It is found near Loma de la Grana, located 6 km southwest of San Luis Atolotitlán, Caltepec. It is protected by the Tehuacán-Cuicatlán Biosphere Reserve. As of 2018, there are only five or six known populations of Dioon caputoi remaining in the wild. Within each population are between 50 and 120, primarily adult, specimens that are distributed randomly throughout the dry scrubland.
