Is this a paper mulberry seedling?
Unknown seedling popped up in a plant bed.
Could it be paper mulberry?
If so, I'll pull that invasive exotic.
Or is there any chance it could be a desirable native Tennessee plant?
This is definitely a mulberry, but it's difficult to tell from the photo whether it's paper, red or white mulberry. Below is a link to a publication that may be of help. Please note the length of the petiole or "leaf stalk" of the paper mulberry on page 5 in contrast to the petioles of the red or white. If you determine that it's not a paper mulberry, the table on page 6 should help with determining if it's red or white.
Thanks for your response, Phil.
Sadly, I suspect that what I have here is the paper mulberry, but I'll print out the guide you suggested and take it out to compare with my volunteer plant.
(Oh how I wish it were a female red mulberry!)