of Associated Research Councils Committee on International Ex- 

 change of Persons. He studied intensively all available collections 

 of parasitic phanerogams from India and Pakistan as represented in 

 American herbaria and prepared several papers for publication. 



Dr. Julian A. Steyermark, Curator of the Phanerogamic Herba- 

 rium, restudied material for the next part of Flora of Guatemala 

 (Standley and Steyermark) and directed work on the illustrations by 

 Mrs. Marjorie Furr, Departmental Artist, and Samuel H. Grove, Jr., 

 Artist-Preparator. He spent considerable time completing the iden- 

 tifications of the families Rubiaceae, Euphorbiaceae, and Lentibu- 

 lariaceae collected by Dr. E. Yale Dawson for the Machris Brazilian 

 expedition to the state of Goias. With the aid of a grant from the 

 National Science Foundation, he assembled data for a revised edition 

 of catalogue of the flowering plants of Missouri (Palmer and Steyer- 

 mark) . In this connection several visits were made to the herbarium 

 of Missouri Botanical Garden and collections were examined from 

 several educational institutions of Missouri. Many field trips to 

 Missouri were made by him to gather relevant distributional data. 

 The work under this grant will be continued into 1958. 



Dr. Francis Drouet, Curator of the Cryptogamic Herbarium, con- 

 tinued research in the classification of microscopic algae. Dr. Han- 

 ford Tiffany and Donald Richards, Research Associates, conducted 

 research in the taxonomy of the Oedogoniaceae and bryophytes, re- 

 spectively. Dr. Gregorio T. Velasquez, of the University of the 

 Philippines, Dr. Richard D. Wood of the University of Rhode Island, 

 and Luis R. Almodovar, of San German, Puerto Rico, worked on 

 various problems of algal classification and distribution in the crypto- 

 gamic herbarium of the Museum. 



Dr. John W, Thieret, Curator of Economic Botany, continued his 

 work on seed and fruit morphology and classification and on several 

 botanical field trips in Illinois (see page 34) devoted considerable 

 time to study of grasses. He completed his survey of the economic 

 uses of cycads. For the Index Nominum Genericorum he submitted 

 additional entries for genera of the Scrophulariaceae. He also started 

 work on the treatment of this family for the Catdlogo e Estatistica dos 

 G^neros Fanerogdmicos, to be published by the Instituto Paranaense 

 de Botanico, Curitiba, Brazil. Toward the end of the year he began 

 preparation of abstracts for the journal Economic Botany. 



Miss Edith M. Vincent, Research Librarian, edited the last part 

 of Flora of Peru (Macbride) and made it ready for publication. In 

 addition to her regular duties she aided many correspondents by find- 

 ing and sending to them descriptions of and information about exotic 

 plants and their uses. 



48 J 



