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Genus Catha
- a genus of African evergreen shrubs characterized by thick leaves and white flowers
Genus Ephedra
- type and sole genus of Ephedraceae: tropical and subtropical evergreen shrubby or creeping plants native to dry and inhospitable regions
Genus Welwitschia
- type and sole genus of Welwitschiaceae
Genus Welwitchia
- type and sole genus of Welwitschiaceae
Genus Cycas
- type genus of Cycadaceae: genus of widely distributed Old World evergreen tropical trees having pinnate leaves and columnar stems covered with persistent bases of old leaves
Genus Zamia
- genus of small evergreen tropical and subtropical American cycads
Genus Ceratozamia
- small genus of Mexican cycads; sometimes classified in family Cycadaceae
Genus Dioon
- small genus of arborescent cycads of Mexico and Central America; sometimes classified in family Cycadaceae
Genus Encephalartos
- genus of arborescent African cycads; sometimes classified in family Cycadaceae
Genus Macrozamia
- genus of large evergreen Australian cycads; sometimes classified in family Cycadaceae