1. USDA Forest Service; Center for Bottomland Hardwoods Research; P.O. Box 227 Stoneville MS 38776
2. Cell and Molecular Biology Department; Tulane University; New Orleans LA 70118
3. E. Ellgaard (deceased), Cell and Molecular Biology Department; Tulane University; New Orleans LA 70118
4. Department of Geology; Tulane University; New Orleans LA 70118