L System - Algorithmic Beauty of Plants

Hello,

Anyone has experience with L-System and in particular with book “the algorithmicbeauty of plants”?

I have a problem with transformations and i cannot figure out what is it… i tripled check every matrix, etc, and everything seems correct to me, so now i am stucked…

thanks

And what do expect to see as an answer? A magical solution?
Post you code here and describe in detail what are you trying to achieve at least.