Did some more work on the branch, because leaves sit on it in particular way. Better I think.
I did some renders but encountered the GISD+BLUR-bug (pillarerror), so I turned GISD off again, and also an issue regarding shadows. I think that if the sun shines in a 'bad' way on a bent leaf, the translucency or light is calculated too hard, so you see the poly edges (while the normals were calculated as smooth). I may try a heavier leaf mesh (this is an 8 poly).