- Nyctaginia, genus Nyctaginia - a caryophyllaceous genus of the family Nyctaginaceae having only one species
--1 is a kind of caryophylloid dicot genus
--1 is a member of
--1 has members: scarlet musk flower, Nyctaginia capitataNyctaginaceae, family Nyctaginaceae, Allioniaceae, family Allioniaceae, four-o'clock family