1. Cecropia schreberiana in the Luquillo Mountains of Puerto Rico

   • Nicholas V. L. Brokaw

   OriginalPaper Pages: 91 - 120

2. CAM photosynthesis in submerged aquatic plants

   • Jon E. Keeley

   OriginalPaper Pages: 121 - 175

3. Are biotic factors significant in influencing the distribution of halophytes in saline habitats?

   • Irwin A. Ungar

   OriginalPaper Pages: 176 - 199