I've been trying to find range information for Utricularia from the Guiana highlands, like U. campbelliana, U. quelchii, and U. humboldti, but information is sort of lacking. I know the first two have been found on Mt. Roraima, but it seems they've been found elsewhere as well. Unlike most Heliamphora, do most epiphytic Utricularia from this part of the world grow in the Gran Sabana as well as on the tepuis?