PREFACE 



This number of the Contributions is composed of six short papers. 



The first paper, entitled The Gyrophoraceae of California, by Dr. 

 Albert W. C. T. Herre, of San Jose, acting professor of biology in the 

 University of Nevada, is a synoptic treatment of the California mem- 

 bers of the group of lichens formerly associated under the name 

 Umbilicaria, but now regarded as of two genera, Gyrophora and 

 Umbilicaria, the latter represented in California by only a single 

 species. 



The second paper on The plant life of Ellis, Great, Little, and Long 

 lakes in North Carolina, by William H. Brown of the Bureau of 

 Fisheries, was prepared incidentally to an inquiry into the natural 

 supply of food for fishes in those lakes. 



The remaining papers are: A Revision of the Subgenus Cyclobothra 

 of the Genus Calochortus, by the late Joseph H. Painter; A Revision 

 of the Cichoriaceous Genera Krigia, Cynthia, and Cymbia, by Paul 

 C. Standley, assistant curator in the Division of Plants; New or 

 Noteworthy Plants of the Eastern United States, by E. S. Steele, 

 editorial assistant in the Division of Plants; and Two New Shrubs 

 from Lower California, by Paul C. Standley and E. A. Goldman. 



Frederick V. Coville, 

 Curator of the United States National Herbarium. 



