As far as we know the traps of all CP are leaves rather than flowers. A
carnivorous flower would be selective against pollinators, provided that it
offers a reward to visitors. Orchids do not seem to offer any reward and
are therefore unlikely to have developed carnivory. Many do, however,
exploit insects for pollination by mimicry.
> These orchids supposedly absorb nutrients from fungi...this would be a poor
> source of nitrogen...
Not necessarily poor. Many plants use fungi in mycorrhizal interactions for
their nutrition.
Does anybody know of mycorrhiza in CP? Might the absence of specific fungi
be a reason for difficulties we have in growing certain CP?
Danny Joel