Sorry I don't know anything about that Josh, perhaps someone has perfected a tissue graft to produce an effect like a labernocytisus wher two sets of cells grow along side each other, but more likely there are tulips with patterned flowers in nature that have been selected and bred to give a striped effect. There are many 'stripy' tulips in nature without virus. On Mon, Aug 29, 2011 at 9:41 PM, Joshua Young <joshuakyleyoung@gmail.com>wrote: > Peter, > > I've heard that the newer varities of Tulips have been bred to have > these lines and aren't virused, can anyone provide more information on this > subject? > > Josh >