Received for publication 4 Apr. 1985. University of Florida Agricultural Experiment Station Journal Series 6295. Special thanks are given to Dr. W.W. Huffine, who collected most of the plant materials, and to Ms. B.J. Center, who provided expert technical assistance throughout these investigations. The cost of publishing this paper was defrayed in part by the payment of page charges. Under postal regulations, this paper therefore must be hereby marked advertisement solely to indicate this fact.