Okay, plant studio isn't ported to Mac, but the addy there is http://www.kurtz-fernhout.com/ you need that final backslash. For L-System try http://www.3dlinks.com and there are a couple of sites I looked at but didn't examine closely that might have mac programs http://vterrain.org/Plants/plantsw.html http://www.cpsc.uccalgary/ca/projects/bmv/software.html

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