Hi Fernando,
In February of '95 my grandpa Nepenthes ventricosa put out 6 flower stalks
from various growing points, both large and small (the climate here is very
highland Nepenthes-like with cool nights the year round but no freezing). The
air was thick with a pungent musky-lemon smell, it was powerful but not as bad
or urine-like as the smell of some other Nepenthes flowers I've experienced.
It
seemed even stronger at night, it uses a nocturnal pollen gatherer perhaps?
If anyone wants to induce multiple flower stalks or keep many flowering
Nepenthes, be careful, you'll be able to smell your collection from several
blocks away! :-)
Regards,
Demetrios