Amy:
I'm sure that if you took a quick trip to the University Herbarium you
could find exactly which CP grow in your area (at least within your
county there should be a few species). A good test plant would be _D.
capillaris_ or _D. rotundifolia_---the second would be better if your
winters are too harsh for the first. These species will survive if
anything can. If your _Sarracenia_ produces a bunch of fat and squat
pitchers, like the bowls of Basil Rathbone's-Sherlock Holmes pipes, you
have _S.purpurea_ but if the pitchers are tall and narrow like a bunch
of flutes in the ground, you have another species---maybe a _S.rubra_
ssp. from the description you gave. Regarding bryophytes---there are
mosses, then there are mosses. _Sphagnum_ moss is great, and in fact is
an excellent indicator plant for CP environments. Other mosses are a
bother in cultivation. The only problem they cause is they can choke
out the plant if they are growing better than the CP is. Use common
sense in dealing with them.
Wow---those amphibians sound great! I'm envious.
Barry