Look up Amorphophallus species and hybrids or Pseudodracontium sp. You could try the experts from Aroid society to learn about your plant’s ID.

I have a tree in my yard that bares fruit that resembles a lemon. The fruit starts as a dark green and turns yellow in October it is larger than a lemon but doesn’t have the sour taste as a lemon it tastes more like a grapefruit. The peeling is thicker than a lemon and the outer skin seem to be rougher. I was told that it was a laurel tree. But the pictures of the laurel tree looks like it but the fruit is different. How can I find out what it is it isn’t poison because I have all ready consumed the fruits. I live in Marietta GA. I have researched the Webb for this type of fruit but come up negative the tree was given to me by a Korean and he don’t know what it is either.

Hey, call those folks and ask ’em if it’s some kind of Peony. Tell ’em BF forgot and Walter’s stumped!