Hey Lindsay, apparently the image did not upload. http://www.botanicalgarden.ubc.ca/forums/showthread.php?t=725
If it's Acer negundo, it should look like this : http://images.google.fr/images?hl=fr&lr=&c2coff=1&rls=GGLD,GGLD:2005-14,GGLD:fr&q=acer+negundo+leaf