Those are weird. What type of lemon?

eloise,

I believe its an Improved Meyer. All the other fruit on the tree has the normal lemon shape.

Looks like something growing next to a nuclear facility or... Love Canal. :o)

Really cool. At first I thought it was a pic of a slug lol!
I think if it has any seeds you should try to grow them. It may just be some other malformation-interesteing though.
~SJN

I would love to try some seed from that lemon if you still have some.

I think this is citron buddas fingers