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Calopogon tuberosus
The brush of hairs on the lip apparently serves as a "pseudopollen" lure, attracting naive, recently emerged bumblebees. The bees, expecting a reward of nectar and/or pollen, land on the hairs. At this point, the hinged labellum swings down under the weight of the bee and positions the bee on the column, where pollen can be placed on its back. If the bee already carries a load of pollen, it will contact the stigma and thus pollinate the plant.
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