Well, 'N.murudensis' is without any doubt of hybridogenic origin.
However according to field observations (unfortunately I was not
there myself so far.....:-( the populations of these plants seem to
be very abundant and _constant_. The last fact is a sign of a genetic
stabilization which e.g. occurs by constant selection for certain
characteristics but can also have genetic reasons (doubeling of a
triploid genome) in other genera. If these populations have reached a
high degree of genetic stability and breed true they can very well be
called a species. Many plant species are of hybridogenic origin. It
is just another trick evolution uses to shorten 'development time'.
> The photo of N. rafflesiana var. alata on page 127 is looking quite
> similar to N.x Mizuho Kondo. The Japanees described it as a hybrid,
> but the plants which you can find in german Botanical Gardens are
> looking all like this N.rafflesiana.
I doubt that N. Mizuho Kondo is a hybrid. I do not see any
characteristics that speak against a true N. rafflesiana. Winged
forms also occur in other species (N. mirabilis) as spontaneous
Andreas Wistuba; Mudauer Ring 227; 68259 Mannheim; Germany
Phone: +49-621-705471 / +49-621-7152027