1) Botanist 2) Linnaean 3) Phytologist 4) Plant scientist 1) Linnaean 
Linnean is closely associated to the alternative spelling Linnaean, and can refer to any of the following, all of which are related to the original system of scientific taxonomy of biological species or its author Carl Linnaeus. The Linnean Society of London suggests that the distinction in spelling is between ‘Linnaean’ referring to Linnaeus ...
• (a.) Of or pertaining to Linnaeus, the celebrated Swedish botanist.