Nordmann kumquat (Fortunella margarita “Nordmann,” Citrus margarita “Nordmann”): What is the Nordmann kumquat, and where did it come from? It came from a Nagami kumquat tree growing in Mr. George Otto Nordmann’s citrus grove. Out of the many trees in his grove, one of George's trees was found to have a surprise mutation. That special tree started producing seedless Nagami fruit. The new mutation was named after the grove's owner, George Nordmann. Nordmann kumquat is a great hand-to-mouth treat directly off the tree, and there is no seeds to spit out. You can also slice some into salads or add some juice or fruit into desserts, baked goods or preserves. I like to squeeze some juice into a Coke.