EXPLORE FRONT PAGE - August 7, 2009 #30
The passion flowers or passion vines (Passiflora) are a genus of about 500 species of flowering plants, the namesakes of the family Passifloraceae. They are mostly vines, with some being shrubs, and a few species being herbaceous. For information about the fruit of the passiflora plant, see passionfruit. The monotypic genus Hollrungia seems to be inseparable from Passiflora, but further study is needed.
The decorative passion flowers have a unique flower structure, which
in most requires a large bee to effectively pollinate. In the American
tropics, wooden beams are mounted very near passionfruit plantings to
encourage carpenter bees to nest. The size and structure of flowers of
other Passiflora species is optimized for pollination by hummingbirds
(especially hermits like Phaethornis) , bumble bees, wasps or bats,
while yet others are self-pollinating.
(Source: Wikipedia )