A while back, I crossed U. asplundii with U. jamesoniana (both directions) but only the seeds from the U. asplundii seed parent germinated.
Here's two pics of the mother's flowers (seed parent):
.... and a pic of Dad's flower (pollen parent):
I planted seedlings both in netpots (in live LFS) & one on treefern. The one on treefern flowered before the others:
Front
Side
Plant (tuber in middle/right of pic - below largest leaf)
The hybrid appears to have grabbed most of it's appearance from the asplundii side. My complete inability to ever produce viable seeds from either selfing or crossing my asplundii clones does lead me to believe that these plants are indeed the hybrid.