1. Origin of Deciduous and Evergreen Habits in Temperate Forests
2. Ficus and Blastophaga
3. Ecological Strategies of Xylem Evolution
4. Doyle, J. A., and L. J. Hickey. 1976. Pollenand leaves from the mid-Cretaceous Poto-mac Group and their bearing on early angio-sperm evolution. Pages 139-206 in C. B.Beck, ed. The Origin and Early Evolutionof the Angiosperms. Columbia UniversityPress, New York.DoylePollen and leaves from the mid-Cretaceous Potomac Group and their bearing on early angiosperm evolution139The Origin and Early Evolution of the Angiosperms1976