Alan LaVergne did an extensive program on pollinating big tuber Sinningias with any other Sinningia species and presented the results.

http://www.burwur.net/sinns/2cross.htm There is an extensive info what clades of Sinningias are there - the close related groups inside the genus - and what are the possibilities of producing seeds when crossing inside and outside of the clade

Michael Kartuz also made a bunch of pollinations in his greenhouse. I was at Kartuz greenhouse several times and saw these crosses blooming. IMHO - the original species S.leuchotricha still takes the prize.

While if left alone the blooming S.leucotricha seldom selfs - shaking and transportation while in bloom will result in seeds Plenty of pollen to fly around. So - most possibly your seeds are are a result of selfing,

Not my seeds m'dear. ;-) Plant belongs to a friend of mine. I'll let him know that there's a good chance it was a selfing. (Love the fuzzy leaves on the leuco!) Thanks for the input!

Welcome. The young seedlings of S.leuchotricha are much less fuzzy than the adults. Your friend needs to keep them for a while - 2-3 years may be - until they are blooming size and display their fabulous leaves.

Yup - bum him for a bit of seeds to try for yourself.