EEPORT OF NATIONAL MUSEUM, 1913. 67 



Dr. J. N. Rose, formerly associate curator of the division, but now 

 on furlough and servmg as a research associate of the Carnegie Insti- 

 tution of Washington, continued, at the Museum, his mvestigation 

 of the family Cactaceae, and in conjunction with Mr. Standley pub- 

 lished a revision of the North American species of Meibomia, section 

 Xephromeria. Dr. E. L. Greene, associate m botany, reported prog- 

 ress in the preparation of part 2 of ''Botanical Landmarks," and 

 pubUshed numerous short papers descriptive of new species mostly 

 from the western United States. Capt. John Donnell Smith, also 

 associate in botany, contmued his studies of previous years on the 

 flora of Central America, and brought together partial results in two 

 papers pubUshed during the year. 



Among persons not connected with the Government who made 

 use of the resources of the division may be mentioned Dr. N. L, 

 Britton, director of the New York Botanical Garden, who is engaged 

 jointly with Dr. Rose in the investigation of the Cactaceae; Dr. D.T. 

 MacDougal, in charge of the department of botanical research of the 

 Carnegie Institution of Washington; Prof. WiUiam Trelease, of the 

 University of Illinois, who was studyuig Phoradendron and the oaks 

 of Mexico and Central America; and Dr. P. A. Rydberg, of the New 

 York Botanical Garden, who had in preparation a flora of the Rocky 

 Mountain region and an article on the family Rosaceae for the North 

 American Flora. 



The number of plants lent to other institutions and to speciaUsts 

 was larger than in any year except the previous one, the principal 

 sendings having been as foUows: To the Royal Botanical Garden and 

 Museum, Berlin, Germany, specimens of Acanthaceae, Araceae, Euphor- 

 biaceae and Orchidaceae, mainly from Panama, for determination for 

 the benefit of the National Museum; and specimens of Zamia and 

 Saxifragaceae for use in the preparation of matter for the "Pflanzen- 

 reich." To Prof. L. Radlkofer, of the Royal Botanical Museum, 

 Munich, Germany, specimens of Sapindaceae chiefly from Panama, 

 and to Dr. Georg Bitter, of Bremen, Germany, specimens of Solanum, 

 for naming in the interest of the National Museum. To the Royal 

 Botanic Gardens, Kew, England, specimens of the genus Marah. To 

 the University of Pennsylvania, specimens of Gerardia, Dasystoma 

 and related genera, for the use of ^Ir. F. W. PenneU, who is preparing 

 an elaborate revision of this group. To the Gray Herbarium of Har- 

 vard University, specimens of several groups for study by Dr. B. L. 

 Robinson, Prof. M. L. Fernald, Mr. Sidney F. Blake, and Mr. F. T. 

 Hubbard. To the New York Botanical Garden, specimens of Vac- 

 cmiaceae and Rosaceae for use in preparing articles for the North 

 American Flora, and specimens of Rocky Mountam plants for study 

 by Dr. P. A. Rydberg. To Prof. C. O. Rosendahl, of the University 



