Jie-san Laushi writes
If two species form a hybrid, with certain characteristics, and then in a
completely different locale, the same two species independently form a
hybrid, with different characteristics, are the two different hybrid forms
the same species?

Stewart Robert Hinsley schreef
By definition, all hybrids between two species belong to the same
nothospecies (hybrid). However if speciation by hybridisation is added
to the mix, then it becomes a matter for determination by observation
(and argument over species definitions).
--
Stewart Robert Hinsley

+ + +
To put it a little differently (this also came up a month or so ago)

If the result of hybridization between two taxa is given the status of a
nothotaxon then all the hybrids, no matter what their characters belong to
that nothotaxon. The well-known example is Magnolia x soulangeana which
contains quite a number of cultivars of varying appearances.

The result of hybridization need not be given the status of a nothotaxon,
but can be recognised as a regular taxon, for example a species. In that
case the delimitation of this species is a matter of taxonomic judgement.
It is conceivable that species A and species B hybridize at the
southern-most point of their range and that the result becomes species C. If
beside that species A and species B hybridize at the northern-most point of
their range the result may be different enough to become species D. I would
not know of a real-life example, but it is conceivable.
PvR