Elaine, thanks for the link to the database entry; that definitely looks like what I have, although mine has never had anywhere near that amount of fruit on it... I've actually only tasted one of the oranges one time and didn't really think it tasted all that great, maybe it wasn't quite ripe (or was overripe) or something
It does flower profusely though, and gives my sunroom a lovely orange-blossom scent when it does
(And it isn't thorny.)