Columnar cacti in arid regions of Mexico provide crucial floral resources for nectar‐feeding bats, such as this Leptonycteris yerbabuenae individual. The bats are then highly effective pollinators, delivering large loads of pollen from flower to flower. See page 450. Photo by César Guzmán'.

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墨西哥干旱地区的柱状仙人掌为以花蜜喂食的蝙蝠提供了至关重要的花卉资源，例如该Leptonycteris yerbabuenae个体。蝙蝠是高效的传粉者，从花朵到花朵都传递大量的花粉。参见第450页。CésarGuzmán'摄。