13-1: University of California Publications in Botany [Vol. 6 



forms as compared with those of the North Atlantic and Arctic Oceans. 

 The occurrence of a Gloiophloea in the North Atlantic (Florida coast) 

 seems, from this point of view, anomalous. It is to be suspected, 

 however, that an increase in our knowledge may show other similar 

 cases. 



ACKNOWLEDGMENTS 



The writer desires to acknowledge the assistance obtained from 

 many sources which has made the foregoing account posvsible. To the 

 Museum d'Histoire Naturelle of Paris through Dr. Paul Hariot, to 

 the Herbarium of the University of Lund through Dr. Svante ]\Iurbeck 

 and Dr. Otto Nordstedt. to the British ]\Iuseum of Natural History 

 through ]\Ir. A. Gepp, to the Koyal Botanical Gardens, Kew, through 

 the courtesy of the Director and of Mr. A. D. Cotton, to the Herbarium 

 of the University of Birmingham through Dr. G. S. AVest, to the 

 Konigliche Biologische Anstalt 2x\ Helgoland through Dr. Paul 

 Kuckuck, to the National Herbarium of Victoria at Melbourne through 

 Dr. A. J. Ewart, to the New York Botanical Garden through Dr. M. 

 A. Howe, and to the cryptogamic collections of Harvard University 

 through Dr. W. G. Farlow, my thanks are due for the privilege of 

 examining type and other material. 



Similar acknowledgment and thanks for courtesies are due Dr. 

 Anna Weber-van-Bosse of Eerbeck, Holland, and Mr. Frank S. Collins 

 of North Eastham, INIassaehusetts, for kindly help in the way of type 

 and other herbarium specimens. For fresh and dried material I have 

 received most valuable assistance from Miss I\Iinnie Reed, Mrs. H. D. 

 Johnston, Mrs. M. S. Snyder, Mr. J. T. Rock, Mr. M. B. Nichols, Dr. 

 N. L. Gardner, and Dr. Carl Skottsberg. Dr. Gardner and Dr. Good- 

 speed have kindly prepared the thin sections so necessary in the work 

 and Miss Helen M. Gilkey has prepared the drawings with great care. 



