|Hummingbird pollinated Kohleria spicata (Gesneriaceae)|
In a recent study, we demonstrated that the evolution of floral traits is driven by adaptation to the most effective pollinators (Rosas-Guerrero V, Aguilar R, Marten-Rodriguez S, Ashworth L, Lopezaraiza-Mikel M, Bastida JM, Quesada M. 2014. A quantitative review of pollination syndromes: do floral traits predict effective pollinators? Ecology Letters 17: 388–400). We also showed that the predictability of pollination syndromes is greater in pollinator-dependent species and in plants from tropical regions. Many plant species also have secondary pollinators that often correspond to the ancestral pollinators documented in evolutionary studies.