Additionally, there are at least that many forms or cultivars. Flower bracts of some species are too small to impound water. Flower spikes of yet other species are pendent, so bracts cannot impound water. In the Neotropical region, hummingbirds are said to be pollinators, with birds as dispersers of seeds. Bats are said to be pollinators in the Pacific region.
Insects eat the leaves.
Aquatic insects and other invertebrates inhabit the phytotelmata provided by bracts.