Bart Schutzman

Zamia standleyi (Yojrá unicej) is a species of plant in the family Zamiaceae. It is endemic to Honduras, and 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. 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 becerrae is a species of plant in the family Zamiaceae. It is endemic to Mexico, where it is known only from the states of Chiapas and Tabasco. There are only two known populations. The plants grow in rainforest habitat on karst substrates. This species was described to science in 2004.

Zamia cremnophila is a species of plant in the family Zamiaceae. It is endemic to the state of Tabasco in Mexico.

Zamia soconuscensis is a species of plant in the family Zamiaceae. It is endemic to the Soconusco Mountains of Chiapas, Mexico. It is threatened by habitat loss. About 5,000 individuals remain in the wild.

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. This plant grows 15 to 60 centimeters tall from an underground caudex. It usually produces a single leaf up to 100 centimeters long by 80 wide. The leaf has up to 12 pairs of leaflets. The species is named for its native rainforest habitat, the Lacandon Jungle, the Selva Lacandona. This species is threatened by slash-and-burn agriculture. It can sometimes regenerate in degraded habitat that has been burned and cleared, and can be

Ceratozamia hondurensis is a species of cycad in the family Zamiaceae.

Zamia elegantissima is a species of cycad in the family Zamiaceae. It is found on the Atlantic Coast of Colón Province, Panama.

Zamia splendens is a species of cycad plant in the family Zamiaceae found in tropical rainforests in southern Mexico. Described in 1984, it was later classified as a synomyn of other Zamia species, but is now recognized as a valid species by most authorities.