This is a variety of the White button flower. Found at the flower garden on the way from Munnar to Thekaddy in Kerala, India.

Notice the bokeh which gives the impression of brushstrokes to some extent. My 100mm Macro sometimes ends up producing these kind of effects wide open. This time though it actually makes the picture better.

Lens : Canon 100mm f/2.8 on Canon 450D
f/4, 1/2000, ISO 100