When looking through the 172 "Viola" images at Acclaim Images.com this Close-up of a Pansy (Viola) Flower. was a favorite.
All of their pictures are hand picked, availiable in a number of formats, and you can even get custom prints and posters.

Description:
Close-up of a Pansy (Viola) Flower.
Stock Photograph: Close-up of a Pansy (Viola) flower.

Some related terms for more images:
beauty,  bloom,  soft,  vertical,  steven james haggard,  floral,  viola,  purple,  horticulture,  flower,  yellow,  delicate,  grow,  plant,  botanical,  nature,  pansy,  close up,  selective focus,