Australian Finger Lime.
Florida growers are on top of this seemingly HLB, Citrus Greening, resistant lime.
Mind you it is a weird lime. Think caviar. I GOT MINE from Bob.
Bob actually has this tree in stock. Call Bob at 239.368.3106 and ask for one. REMEMBER to mention me or 4-H!
Read more here:
https://www.fast-growing-trees.com/Finger-Lime-Tree.htm
http://citrusindustry.net/2017/03/02/finger-lime-new-crop-citrus-growers/
