pagnr, why do you think I would not find many cross-pollinated hybrids in my seedling Flying Dragon?
I counted/separated the seedlings, and most are mono embryonic so these should be more likely to be a hybrid.
They would not need to be hybrid in the sense of being cross pollinated to another type of Citrus.
They could be self pollinated variants, from genetically variable pollen and ovum, or re shuffled recombinants.
It wouldn't be impossible to get Poncirus X Citrus Hybrids, but it doesn't seem to happen much spontaneously.
Do any look that far different from Poncirus ?