Re: _Heliamphora_

Robert Allen (Robert.Allen@Eng.Sun.COM)
Fri, 7 Jan 1994 09:58:58 +0800

>>From: (Jan Schlauer) wrote:
>>It seems _H.tatei_ is quite complex a species. In fact, it is the only
>>"true" carnivore known so far in that genus (the possession of digestive
>>enzymes has been demonstrated in the paper by MICHELANGELI & AL. which I
>>have mentioned on this list some time ago). I cannot judge whether this is
>>primitive or derived within _Heliamphora_:

Jan, what do you know about the presence of wetting agents (surfactants?)
in the pitchers of other H. species? The reason I ask is trivial, but based
on observations of dropping some ants in my pitchers of H. heterodoxa x minor.
The ants went straight to the bottom of the pitcher, as if the water had
no surface tension. I believe that Sarracenia also has surfactants in their
pitchers, as do Nepenthes...