Mandarin Robinson

The Robinson mandarin is a hybrid of Clementine and Tangelo Orlando created in Florida in 1942 by the USDA (US Department of Agriculture).
Its fruit is a large, flattened mandarin, very juicy, sweet and fragrant, with melting flesh.

The tree is small but very productive, with an early harvest.
Robinson is one of the most cold-hardy of the mandarin trees.

References:
https://idtools.org/tools/1076/index.cfm?packageID=1179&entityID=8778
https://citrusvariety.ucr.edu/crc3850