Ding, ding, ding, ding, ding! We have a winner!
Capensis guessed Utricularia humboldtii, and that's exactly it!
No pitchers
not sticky
not aquatic
not pitfall
not lobster pot
carnivorous
suction traps
purple flowers (no help there!)
not common
Incorrect guesses:
Sarracenia leucophylla, drosera binata, Dionaea muscipula, Utricularia sandersonii, Brochinnia reducta, Genlisea sp., U. longifolia, U dichotoma, U. livida, U. reniformis