At November 7, 2014 I published a picture in Daffnet which I thought to be N. x xanthochlorus. Gerd Knoche told me that it may be N. x perezlarae (N. miniatus x N. cavanillesii). He lets me doubt whether I am right or not. The broader petals, no green in the corona, and that the pollen seems to be of no good quality strengthen his opinion.
Theo
Gerd could be correct. Also in your first photo there is N. miniatus in the background. Was there any N. viridiflorus growing nearby?
Harold
Harold,
As I know from Leslie Tucker N. viridiflorus is growing in the neighbourhood.
Theo