Vol. XI] EVERM ANN— DIRECTOR'S REPORT FOR 1921 £27 



during two years and the most complete collection of Samoan ferns in 

 existence." 



Summary of the Prager Collection 

 Twenty thousand species phanerogams, 500 ferns, 500 mosses and 

 hepatics, chiefly German ; 500 algae, Germany, and German seas ; 3,000 

 fungi, all Europe, including the classic collection of Dr. Baenitz; 100 

 lichens, middle Europe; 10 boxes of microscope slides of diatoms and 

 other botanical specimens. 



Many species are represented by specimens from different parts of 

 Europe and Asia, so that the number of specimens far exceeds the 

 number of species. The species are catalogued by hand in 21 volumes, 

 under the families and genera, according to the system of Engler and 

 Prantl, in Pflanzenfamilien. 



Some genera are represented by many specimens collected and named 

 by authorities ; for instance, Rubus, Rosa, Erica and Statice, besides the 

 classic Hohenacker's collection of cereals numbering 200. We have 

 estimated from the catalogue even a greater number of species than 

 Dr. Prager. According to the estimate, there are represented in the 

 phanerogams and ferns 1,090 genera and 21,006 species; mosses, 30 

 genera and 401 species ; lichens, 19 genera and 279 species ; fungi, 3,656 

 species; algae, 500 species, and hepatics, 65 species, making a total of 

 22,907 species altogether. 



The regular herbarium, exclusive of the Prager Herbarium, now con- 

 tains 70,762 mounted specimens, and 4,698 unmounted specimens of 

 mosses, lichens, and hepatics, bringing the total to 75,460, an increase for 

 the year of 7,671 specimens. The collections made in Lower California, 

 by Ivan M. Johnston, the botanist of the Expedition, are not included, 

 as at present the exact status of the collection is not known. Specialists 

 who have examined some of the groups assert that, in spite of the fact 

 that the time when the collecting was done was the most unfavorable of 

 the year, it is the best collection ever made in that little explored region. 

 Mr. Johnston estimates about 1,500 numbers, represented by probably 

 6,000 specimens. There are about 300 species of which about 50 are 

 new to science. The report will be ready for publication in the spring. 



The most notable contributions to the herbarium have been as fol- 

 lows: 560 from Idaho by purchase; by exchange: N. Y. Botanical 

 Garden, 225 lichens, 50 mosses from Montana, and 747 miscellaneous ; 

 Arnold Arboretum, 1,557 trees and shrubs; National Herbarium, 1,421 

 miscellaneous specimens, and Ira D. Clokey, 223 from Colorado. Seventy- 

 four different persons have contributed to the herbarium, often speci- 

 mens for identification, but there have been some notable gifts. Among 

 these are 77 species of Veronica from New Zealand, by Dr. L. Cockayne, 

 the well-known authority on New Zealand plants and a specialist on the 

 genus. He plans to have represented in our herbarium all the New 

 Zealand species of Veronica obtainable. Mr. C. Piper Smith has given 

 us a valuable lot of specimens chiefly from Utah and Maryland, and 



