Just to confirm, the Merriam-Webster Disctionary defines as follows:
bot·a·ny: a branch of biology dealing with plant life
This question would be really funny if it weren't for the underlying tone that botany is distinct from biology. Unfortunately many a plant scientist (or botanist) can attest that at many major universities, botany is considered secondary to "real science", which is often defined as human genetics or neurobiology. This is is seen in the distribution of financial resources and in the diminished part of plant biology in undergraduate biology curricula. I've personally witnessed academic discussion where plants were considered irrelevant for the study of circadian rhythms or basic developmental biology.
Among the public this misconception of "botanist" is also prevalent. Ask yourself, what do you picture when you hear the term "botanist" or "plant biologist"? If you don't picture a scientist in a modern lab researching basic questions essential for human survival, than we as botanists have done a very bad job at projecting who we are and what we do.