Click Here To Visit The SRGC Main Site
I have that yellow form as well, Wim.
This page is open to all on Facebook , I think - - click to the page https://www.facebook.com/schullhorn and scroll down to the "Videos" section on the left hand side of the page - see how their bulbs are chipped into six pieces - by machine! Eek!
I have a whole rash of little seedlings coming out from F2 crosses of N. rupicola watieri x rupicola marvieri.