Possible pollination by hummingbirds in Anthurium sanguineum Engl. (Araceae)

Species of Anthurium presumably are pollinated by insects. In the montane r ainforests of western Colombia we recorded eight species of hummingbirds pa ying regular visits to the nectar-producing inflorescences of Anthurium san guineum. At peak-flowering A. sanguineum plays an important role in the bir ds' nutrition. Pollen is deposited on the tip of the birds' bills, indicati ng that pollination by hummingbirds occurs frequently. As no other flower v isitors were recorded, we consider hummingbirds the main pollinators to A. sanguineum.