A sure bet is that it's in the chrysanthemum family, can you give us any info on the plant, height, flowers on a single stem, how large are the flowers, etc..... Another guess would be Dahlia....
I agree, the flower looks like a chrysanthemum. But a number of other plants have similar looking flowers. Is the plant woody (shrub/tree)? Is it a perennial? Is it an annual? How tall does it get? What are the yound stems like? What are the leaves like? Are they fragrant or scented when crushed?
