A pattern I have fond memories of is Harebell by Coalport. My mother has a large teaservice set in this pattern that was her great-grandmothers. She would use when I was a little kid when entertaining her friends. Of course now it's in a box somewhere in their basement! 
A Harebell is another name for a bluebell that you may be familiar with. This is a flower found in Great Britain and all over northern Europe that grows in the late summer / early fall. The flower is a pale blue, but in this china pattern is painted as a vibrant turqouise which is brilliant against the white background. While the teacup shape is a bit old ladyish for me (but aren't all teacups in general?) this is really a beautiful pattern!
Images taken from ebay