Interesting indeed. I would say variegation. In nature it happens randomly. Enjoy.

It looks delaminated on the visible half. Is the back side the same color.

Steve

Here is the back side

It could be a lack of a nutrient. Time will tell but good luck if it is!! The next few leaves would be interesting to see. Please keep us updated)

Hi Mike! I most definitely will keep everyone updated. ! It gets watered with rain water fertilized with foliage pro. If I’m feeling generous, it also gets the occasional weak dose of fish emulsion. That doesn’t happen that often since it is inside and the smell is rather horrid.

I suppose we shall see what the next several leaves look like!

maybe it's just a mutation

to pornicirusguy6b452xx I got ahold of lemons that say they product of Argentina do you know the variety they are

I agree, citrange, something does seem odd. But there aren’t any pests and the size of the lighter area has stayed the same in relation to the leaf as far as I can remember.

It might not be variegation, but I’m at a loss for what else it could be if it isn’t!