Taxodium "Little Leaf" RARE!!!!

Taxoidum "little Leaf" is a very  strange and interesting "Bald Cypress".  I received this years ago from a friend in the Netherlands that has been collecting Metasequoia for years and found this oddity in a large planting of Metasequoia seedlings.  It has tiny leaves and very tufted growth habit - very open and other worldly nearly.  My friend grew this odd seedling for a few years and kept trying to graft in onto Metasequoia and failing.  For some reason he decided to try grafting it onto Taxodium - and it worked!  I have to question what this plant is???  A bizarre mutant Metasequoia or a bizarre mutant Taxodium that was growing in a large group of Metasequoia (I find this to be highly unlikely).  Best guess is that is is a naturally occurring hybrid between the two Genera and needs someone to go some genetic testing to confirm my suspicions.  RARE, BIZARRE and certainly a "what in the World is that weird looking tree?".  Fast growing, extremely open habit and super tiny leaves (it