Asa Gray was an influential American botanist born on November 18, 1810, in New York. He is best known for his work in plant taxonomy and for being a key figure in the study of North American flora. Gray's extensive research and publications helped to classify and describe many plant species, making significant contributions to the field of botany. In addition to his research, Gray was a prominent advocate for the theory of evolution, supporting Charles Darwin's ideas in the United States. He served as a professor at Harvard University and played a crucial role in establishing the Gray Herbarium, which houses a vast collection of plant specimens. Gray passed away on January 30, 1888.