Y
>Are the protuberances at the tips of the lobes on this structure the stigmas?
Y
>Do the petals?  that hang down and effectively seperate the anthers
>from the above structures help to promote outcrossing? 
Y
>If so, does the flower become more open at a later date, presumably
>when the stigmas are no longer receptive? 
N. 
>Barry,
>>Air temperatures reach as high as 115--120 F (46--49 C). Since 
>How does this equate to the temperatures out side your greenhouse
>at the same time?
Outside air temperatures are comparable.
I just saw my Darlingtonia plantlets are producing their first ever
bifurcated pitcher appendages. Up until now they've been unbifurcated.
I guess they're growing up.
B