> To my knowledge (and I grow several) Catopsis are not carnivorous.
At least not carnivorous sensu stricto.
> (...) are all bromeliads carnivorous?
At least all cistern-forming (i.e. a large proportion of all)
bromeliads are subcarnivorous.
> My amatuer's answer is no.
My amateur's answer is similar.
> If the opposite were true then virtually any
> plant capable of absorbing nutrients through its leaves (anyone know one
> that can't)...
Perhaps some Cactaceae can't but I am not really sure in this respect.
> ...would fall into the same class.
Yes, indeed.
> Most defintions require that the animal nutrients used by the plants be
> absorbed by digestive enzymes secreted by the plant. Only then will it be
> considered carnivorous.
Exactly.
> This leaves my treasured Heliamphora in an awkward position since (correct
> me if I'm wrong here) no digestive enzymes have yet been identified in the
> genus.
This is no longer true. In a recent paper, Jaffe, Michelangeli & al.
have demonstrated intrinsic proteolytic activity in _Heliamphora
tatei_.
> That's all right, I'm going to grow them anyway! >
Yes, in any event don't throw them away.
Kind regards
Jan