Hi Eric its difficult to tell what clone you have because when a clone is Tc'd time and time again, it can produce variations in them.
Here is a picture of the male flowers on a basjoo.
I was going to try an experiment last year that involved collecting the pollen then freezing it, I could then use the pollen when I had female flowers to pollinate.
This is a proven method with some species of plants and the pollen can remain viable for up to a year.
Unfortunately I couldn’t find any pollen so could this be a sterile clone?
Or does the pollen only remain on the flower for a very short time
Tony