Citrus Hybrids (Lakeside: trees, fruit trees, between)

[tmozer]

The citrus fruit trees are loaded around my complex (Lakeside). When I am out walking around I usually grab a ripe orange or graphfruit to enjoy while strolling or to bring home.

At least one of the trees have fruits that are orange size and orange color when ripe. However the shape and skin texture is more like a lemon. When I peeled and ate an orange colored ripe looking fruit lying under the tree it tasted much more like a lemon than an orange. The insides were more lemon like. The taste was not as strong as a lemon, but more lemon than orange.

Is this a hybrid? Is there a cross between an orange and a lemon? If so, what is it called?