| geographic patterns in the reproductive ecology of agave lechuguilla (agavaceae) in the chihuahuan desert. i. floral characteristics, visitors, and fecundity. | floral characteristics such as morphology and flower color have been interpreted as adaptive traits that evolved through selective pressures generated by pollinators. differences among populations in the expression of floral characters could result from natural selection for their adaptive value to local conditions. we describe the patterns of variation of flower morphology, color, and fecundity of agave lechuguilla in 11 populations along a latitudinal gradient encompassing the whole range of t ... | 2003 | 21659130 |