Plasticity in floral longevity and sex-phase duration of Lobelia siphilitica in response to simulated pollinator declines.

Our results suggest that plants can respond to pollinator declines by plastically adjusting both the longevity and sex-phase duration of their flowers. If this plasticity increases the opportunity for outcross pollination, then it could be one mechanism by which pollinator-dependent plant species maintain seed production as pollinators decline.