How are the flowers pollinated? A euglossine bee lands on the lip (the spade shaped platform with the hairs) and moves toward the center to scratch for the fragrance. His weight pulls the entire flower down. When he launches into the air to transfer the collected fragrance from front to hind legs, he hits the tip of the column and receives the pollinarium with its sticky viscidium on his thorax. Polycycnis barbata is pollinated by Eulema speciosa.