Acknowledgments

My grateful thanks are due to Dr. C. T. Rogerson, of the New York Herbarium, for the loan of specimens from Mitten's collection, to Dr. C. E. B. Bonner, of Geneva, for information and the loan of specimens, to Dr. J. Proskauer, of the University of California, for the gift of a copy of Dumortier's “Recueil”, to Mr. V. D. Zotov, of the Botany Division, D.S.I.R., Christchurch, for advice on nomenclature, to Dr. Tycho Norlindh, of the University of Lund, Dr. H. Persson, of the Riksmuseum, Stockholm, Dr. H. N. Barber, of the University of Tasmania, and Mr. R. T. M. Pescott, of the Melbourne National Herbarium, for material assistance, and a special thank you to Sir Edward Salisbury late of Kew, for the loan of the original specimen of L. clavigera.