They are grown in Florida, but not in California.
There are now (2004) at least 7 varieties of Tangelos. Sometimes the Uniq (or “Ugli”) fruit is classified in the Tangelo family.
1 fresh Tangelo = 6 oz = 170g
First deliberate cross was done by a Dr Walter T. Swingle in the US Department of Agriculture Citrus Breeding Programme at Eustis, Florida in 1897. He was involved in the following fruits: Murcott Orange, Orlando Tangelo, Tangelos and Kumquats.
Literature & Lore
The plural is “tangelos”.
The name comes from combining a part of the word “Tangerine” with a part of the word “Pummelo“.