Cosmos is a genus, with the same common name of Cosmos, of about 20–26 species of annual and perennial plants in the family Asteraceae.
being of the achromatic color of maximum lightness; having little or no hue owing to reflection of almost all incident light; "as white as fresh snow"; "a bride's white dress"
Paint or turn (something) white
a member of the Caucasoid race
whiten: turn white; "This detergent will whiten your laundry"
Cosmos flowers are produced in a capitulum. Cosmos flower Capitulum is surrounded by a ring of broad ray florets and a center of disc florets. There is a lot of color variation in between the species. Cosmos flowers are 2-4 inches in diameter. Cosmos flowers come in brightly colored single or double flowers which include white, pink, orange, yellow, and scarlet colors.
White Cosmos
A huge bank of white Cosmos was planted along one side of a path. They are one of my favourite summer annuals.