16 Flowers Named for Celebrities

Naming new flowers for famous people is an age-old tradition that bestows honor on the namesake and—provided the plant breeder is a savvy handicapper of celebrity staying power—enduring interest in the bloom. In the early 1800s, Empress Joséphine of France, a renowned rose aficionado, named hybrids after members of her inner circle. In the 1930s, when horticulturists in the U.S. discovered a new rose breed, it was promptly dubbed 'Mrs. Franklin D. Roosevelt.'

For more examples see this slideshow from Architectural Digest: 
http://www.architecturaldigest.com/celebrity-homes/2014/flowers-named-for-celebrities-slideshow