REPOKT OF NATIOiSrAL MUSEUM, 1912. 49 



of plants for the Department of Agriculture. Capt. John Donnell 

 Smith, also associate in botany, continued his investigations of Cen- 

 tral American plants, and in a pajDer issued during the year was 

 incorporated a synoptical treatment of the Central American genus 

 Hauya^ prepared by him in collaboration with Dr. Rose. 



Besides emi^loyees of the Department of Agriculture, by whom the 

 herbarium was constantly consulted, many botanists not connected 

 with the Museum spent more or less time in the division, conducting 

 investigations, as follows: Dr. William Trelease, on Agave and 

 Phorodendron ; Dr. N. L. Britton, director of the New York Botan- 

 ical Garden, on the Cactacea^; Mr. E. L. Morris, acting curator-in- 

 chief of the Museum of the Brooklyn Institute, on the genus Plan- 

 tag o; Dr. K. M. Wiegand, associate professor of botany at Wellesley 

 College, on the genus Arrheldnchier ; Dr. J. ]SI. Greenman, of the Field 

 Musemn of Natural History, on Mexican plants; Prof. J. H. Schaif- 

 ner, of the Ohio State University, on the lower cryptogams; Prof. 

 R. F. Griggs, of the same university, on the genus Bihai; Miss Alice 

 Eastwood, of the California Academy of Sciences, on the genus 

 Lupinus,' and Mr. A. A. Heller, of the University of Nevada, and 

 Mr. C. H. Boynton, of Biltmore, N. C, on several groups of phanero- 

 gams. Prof. J. J. Thornber, of the University of Arizona, was en- 

 gaged during most of the year in the preparation of a flora of Ari- 

 zona, based largely on the collections of the Museum. 



Over 6,700 specimens of plants were lent to 29 different establish- 

 ments and individuals to assist in investigations in progress. The 

 principal sendings were as follows: Specimens of Saxifraga, Canna, 

 and Capnoides, and of the family Hydrophyllacere, to the Royal 

 Botanical Museum in Berlin, for use in the preparation of matter 

 for the " Pflanzenreich " ; representatives of the families Piperacese, 

 Meliacese, and Begoniacese, from Panama, to INIr. de Candolle, of 

 Geneva, Switzerland, whose determinations are of very material 

 assistance to Mr. H. Pittier in his work on the flora of Panama, as 

 are also those of specialists at the Berlin Botanical Garden, to whom 

 much Panama material has been sent; specimens of Agave and 

 Phorodendron, to Dr. "William Trelease, for his monographic studies 

 of these groups; lichens of the family Graphidacea?, to Prof. Bruce 

 Fink, of INIiami University, Oxford, Ohio, who has an elaborate mono- 

 graph of this difficult family in preparation ; specimens of Apocynum, 

 to Prof. Augusto Beguinot, of the Regia Universita Degli Studi, 

 Padua, Italy, for monographic purposes ; specimens of Dryopteris, to 

 Mr. Carl Christensen, of the Botanical Museum at Copenhagen, who, 

 with material from practically all of the large European herbaria, is 

 monographing the genus; specimens of various groups to the New 

 York Botanical Garden, namely, Vacciniacea?, mainly from Panama, 

 95114°— 13 i 



