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Genus Nyctaginia
- a caryophyllaceous genus of the family Nyctaginaceae having only one species
Genus Abronia
- genus of western North American herbs having showy flowers
Genus Allionia
- small genus of chiefly American herbs
Genus Bougainvillea
- ornamental tropical woody vines
Genus Bougainvillaea
- ornamental tropical woody vines
Genus Pisonia
- genus of often thorny tropical trees and shrubs and some vines; mainly America
Genus Acanthocereus
- mostly trailing cacti having nocturnal white flowers; tropical America and Caribbean region
Genus Aporocactus
- small genus of epiphytic cacti of Mexico
Genus Ariocarpus
- slow-growing geophytic cacti; northern and eastern Mexico; southern Texas