Oops. linked all to the same picture. Here are the correct links:

Vinca1 : Purple flowers, slight variegation
http://www.users.globalnet.co.uk/~sy...ocs/vinca1.jpg

Vinca2 : Purple flowers, stong variegation with golden edge to leaves
http://www.users.globalnet.co.uk/~sy...ocs/vinca2.jpg

Vinca3 : Almost white flowers, no variegation
http://www.users.globalnet.co.uk/~sy...ocs/vinca3.jpg

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Martin & Anna Sykes
( Remove x's when replying )
http://www.users.globalnet.co.uk/~sykesm