try in the plain ol' marijuana forum, probably get more responses. i don't really know...i mean...it loooks like marijuana...but... do you have any larger pictures?
True maryjane would have Cotyledons (they look like seed halves) below the first leaves. also, mary doesnt start out with 7 leaves, usually 3 on the first couple sets. and the leave ends arent blunted like that, and there is more of a "sharpness" to the serration on the leaf edges.