Ceratozamia is a genus of New World cycads in the family Zamiaceae. The genus contains 27 known currently living species and one or two fossil species. Most species are endemic to mountainous areas of Mexico, while few species extend into the mountains of Guatemala, Honduras and Belize. The genus name comes from the Greek ceras, meaning horn, which refers to the paired, spreading horny projections on the male and female sporophylls of all species.
Ceratozamia alvarezii is a species of plant in the family Zamiaceae. It is endemic to Mexico, where it is known only from Chiapas. It is found near Rizo de Oro in the Sierra Madre de Chiapas.
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 fuscoviridis is a species of plant in the family Zamiaceae. It is endemic to Hidalgo state in Mexico. It is a Critically endangered species, threatened by habitat loss.
Ceratozamia hildae, commonly known as the bamboo cycad, is a species of cycad in the family Zamiaceae that is endemic to Mexico. It is native to the Huasteca Potosina of Querétaro and San Luis Potosí, near the Santa Maria River. C. hildae inhabits deciduous oak woodlands at elevations of 850–1,300 m (2,790–4,270 ft). It is threatened by habitat loss and over-collecting.
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 matudae is a species of plant in the family Zamiaceae. It is native to Mexico, where it occurs in the states of Chiapas and Oaxaca, and its distribution extends into western Guatemala. Though some populations are in protected areas, the species is still affected by habitat loss as forest is cleared for plantations.
Ceratozamia mexicana is a species of plant in the family Zamiaceae.
Ceratozamia microstrobila is a species of plant in the family Zamiaceae.
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 sabatoi is a species of plant in the family Zamiaceae. It is endemic to Mexico, where it occurs in the states of Hidalgo and Querétaro. It is known from only two localities, one of which is degraded by agriculture and grazing.
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.
Zamia fischeri is a species of cycad in the family Zamiaceae. It is endemic to Mexico. It is often confused with Zamia vazquezii. Zamia fischeri is named after Gustav Fischer, a cycad enthusiast of the nineteenth century.
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 lacandona is a species of plant in the family Zamiaceae. It is endemic to Mexico, where it occurs only in the state of Chiapas, near Palenque and Agua Azul.
