I think this IS a navel orange, as it had the wee buddy in it.
A single
mutation in
1820 in an
orchard of sweet oranges planted at a
monastery in
Brazil yielded the
navel orange, also known as the Washington, Riverside, or Bahie navel. The mutation causes navel oranges to develop a second orange at the base of the original fruit, opposite the stem. The second orange develops as a
conjoined twin in a set of smaller segments embedded within the peel of the larger orange. From the outside, the smaller, undeveloped twin leaves a formation at the bottom of the fruit that looks similar to the human
navel.
Because the mutation left the fruit seedless and, therefore, sterile, the only means available to cultivate more of this new variety is to graft cuttings onto other varieties of citrus tree. Two such cuttings of the original tree were transplanted
[1] to
Riverside,
California in
1870, which eventually led to worldwide popularity.
Today, navel oranges continue to be produced via
cutting and
grafting. This does not allow for the usual
selective breeding methodologies, and so not only do the navel oranges of today have exactly the same genetic makeup as the original tree, but also, they all can even be considered to be the fruit of that single, now centuries-old tree.
FASCINATING!!!!!