Think in Bryce. There are many things you can do with mixing tree types, leaf types. You can get weedlike things and multirep to your heart's content. With the instancing of the leaves, the polygon hit is minimal. I've seen renders with 400 trees. These could be 400 weeds. I myself have done bushes/weeds and filled up areas with them. Flexibilty is why Corel did what they did and the tree lab is very flexible. Spit