name that plant

I need the name of the night scented plant in my old garden, the discription is violet flower, green leaves that unroll evening scented apx 12in high, and if anyone knows where i can purchase a new plant from. thanks

 

It sounds like Night-scented stock. Matthiola longipetala sub bicornis.


http://en.wikipedia.org/wiki/Night-scented_stock

 

thanks for the reply but the stocks don't come in the very dark violet/purple or with the leaves that uncurl, maybe you know what this is. thanks again