four-o'clock family

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Noun1.four-o'clock family - a family of flowering plants of the order Caryophyllales
Caryophyllales, Chenopodiales, order Caryophyllales, order-Chenopodiales - corresponds approximately to the older group Centrospermae
genus Nyctaginia, Nyctaginia - a caryophyllaceous genus of the family Nyctaginaceae having only one species
Abronia, genus Abronia - genus of western North American herbs having showy flowers
Allionia, genus Allionia - small genus of chiefly American herbs
Bougainvillaea, genus Bougainvillaea, genus Bougainvillea - ornamental tropical woody vines
genus Mirabilis, Mirabilis - four o'clocks
genus Pisonia, Pisonia - genus of often thorny tropical trees and shrubs and some vines; mainly America