The American Longhair is a proposed breed of cat. In the early stages there was some resistance from Persian breeders, but the American Longhair is now accepted in some registries and is quickly becoming more popular in Europe and North America. Because the shorthaired trait is recessive, the American Longhair still produces shorthaired variants. The coat, the flattened face, and the generally square, lean build have led to American Longhairs being likened to Domestic Longhairs, an image that has not done much for their popularity.

http://en.wikipedia.org/wiki/American_Longhair