Mario Vázquez Torres

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.

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 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. This plant grows in oak and pine-oak forest and woodland habitat. Threats to the species include destruction of the habitat for agriculture and overcollection for horticultural purposes. This species was first described in 1984. It was revised in 1997, with one variety being elevated to species status as Dioon sonorense.

Dioon rzedowskii is a species of cycad that is endemic to Oaxaca, Mexico. It occurs in the Rio Santo Domingo valley, near the villages of San Bartolomé Ayautla and San Pedro Teutila.

Dioon holmgrenii is a species of cycad in the family Zamiaceae. It is endemic to Mexico, where it occurs only in an area just to the southwest of San Gabriel Mixtepec, Oaxaca. It is known by the common name palma del sol (sun palm). This plant grows in humid pine-oak forest habitats. There are only two known subpopulations.

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 (formerly San Luis Tultitlanapa), 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. The total mature population now stands at an estimated 2,000 to 2,500 individuals.

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. This cycad is generally palm-like in appearance. The trunk is rounded, becoming more cylindrical with age to a maximum length of 25 centimeters. It bears 2 to 6 prickly leaves each up to 80 centimeters long and made up of 12 to 136 leaflets. This plant grows in pine-oak forest alongside Arbutus xalapensis, Buddleja cordata, Carya ovata, Litsea glaucescens,

Ceratozamia morettii is a species of plant in the family Zamiaceae. It is endemic to Mexico, where it is limited to the state of Veracruz north of Jalapa. It grows on steep clay and basalt cliffs in cloud forest habitat. This cycad is palm-like in appearance but with a trunk no more than 30 centimeters long, often shorter, and quite variable in shape. It has up to 10 leaves which are up to 140 centimeters long by 65 wide and are made up of 12 to 25 pairs of leaflets. Other native plants in this species' nearly inaccessible cloud forest habitat include Alnus jorullensis, Clethra mexicana,

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 to make way for farming, as well as other factors such as frequent wildfires, the possible disappearance of its pollinators, exposure to pesticides from crops, soil erosion, and being over-harvested for decorative purposes. It was estimated that there were 300-350 individuals in 2020.

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 (in the isthmus of Tehuantepec region). It is threatened by habitat loss.

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Dioon sonorense is a species of cycad native to northern Mexico.