Sinningia richii and richii 'Robson Lopes'
Above - S. richii - the flower is twice as large as the flowers on 'Robson Lopes' , it is stark white with yellow lines in the throat.
Above and below- Sinningia richii 'Robson Lopes' - The yellow flowered form of S. richii.   I crossed this to four of my
S. eumorphas that were in bloom
, both  crosses (eumorpha x richii RL) and the backcross (richii RL x eumorpha).  
Only the (richii RL x eumorpha) took and only one set then, the others all blasted within a few days. The seedlings though
are definitely crosses as the they have the sticky, sticky leaves of
S. richii. also  the multibranching, but look like S.
eumorpha
.   It is interesting that with S. richii Robson Lopes as the seed parent all of the bloomed plants as of 2011 are
white to purple.