Dana Royer, assistant professor of earth and environmental sciences, researched why pointy-leafed plants are more common in colder climates. Posted 04/01/06 Smooth or pointy is there a reason? If that question refers to a leaf, a study by a Wesleyan researcher may have an answer that includes some cold facts about sap flow and the weather. The study by Assistant Professor of Earth and Environmental Sciences Dana Royer and featured in a recent issue of the International Journal of Plant Sciences looks at the characteristics of plants with pointy leaves versus smooth-leafed plants and finds the difference is more…