No offense to Zongyi who is a nice fellow.. but anyone can make a statement on a website. *This does not make it a fact. *Where is the reference to the scientific literature that details the study?
BTW incase your wondering.. Charles Clarke Nepenthes of Sumatra and Peninsular Malaysia Pg. 69
In closed habitat the sex ratio is closer to 1:1 with a small bias AGAINST males (approximately 2male:3female) although in some species such as N. gracilis the bias was significant with even more females to males.
In harsher open habitat the ratio was more males to females in some cases all male. *Charles hypothesizes that the males are better able to live in the more hostile environment. *Which is a reasonable explanation for why no females would be found when surely they must exist somewhere. If this is the case and in certain habitat one sex has the advantage for survival over the other these ratios should be thrown out as the overall ratio since they are biased by environmental factors and not an indication of the true ratio present in a seedling population.
be careful what you post