Disk-floret of a Cornflower (Longitudinal
An illustration of a longitudinal section view of a disk-floret of the cornflower. Centaurea cyanus ('Cornflower, Bachelor's button, Basket flower, Bluebottle, Boutonniere flower, Hurtsickle) is a small annual flowering plant in the family Asteraceae, native to Europe.
Benson John Lossing, ed. The New Popular Educator (London, England: Cassell & Company Limited, 1891)
Courtesy the private collection of Roy Winkelman