Angie Levin is a British printmaker I really like. When I was in Stockholm visiting my friend Ellen, I bought 4 little reproductions of her art work, and I have just found out she has published a book, too (take a look here, is wonderful). I like the color palettes in her artwork, and the way she portrays flowers and plants.
Angie Levin: Wild Garden II
Angie Levin: Salthouse Linocut
Angie Levin: Spey Seedheads
Angie Levin: cover illustration for Natural Garden Style
If you like botanical art you must check out her website!