ARTHUR AND JOHNSTON: UREDINALES OF CUBA 101 
been Chief of the Department of Entomology at the Station since 
1909. 
Mr. S. C. Bruner is assistant pathologist at the station, having 
been appointed in 1916. He has one rust collection to his credit. 
Mr. J. R. Johnston, the associate author of this paper, was 
pathologist to the station (1914-1917), and is now Chief, and 
especially in charge of pathology and microbiology, in the Office 
of Plant Sanitation at Havana. He is credited with 233 collec- 
tions, representing 96 species, about five sevenths of the total 
number. He has also supplied much general information, espe- 
cially in the way of field observations. 
The above showing is an interesting indication of the botanical 
enthusiasm and devotion of the scientific men that have been 
employed by the Cuban Experiment Station. It becomes all the 
more noteworthy when it is understood that botanical collecting, 
and especially collecting of fungi, is not considered at all necessary 
at this station, and that no systematic effort is made to maintain 
a cryptogamic herbarium, although incidentally much material 
has accumulated. 
The second group of contributors toward material for the 
present study has consisted of the men forming the expeditions 
sent out by the New York Botanical Garden, together with those 
joining these expeditions for a part of the time. Beside supplying 
specimens, much assistance has been rendered also by members of 
the garden staff in determining the hosts and in other services. 
There have also been much general good will and interest dis- 
played toward this work. 
The first expedition from the garden, in which rusts were 
secured, was in 1903. It was composed of Prof. F. S. Earle and 
Prof. L. M. Underwood, and was joined for a part of the time by 
Prof. E. W. D. Holway. Professors Earle and Holway sailed 
from New York on Feb. 26, and reached Santiago de Cuba on 
March 5, being joined there by Professor Underwood. After 
three days a coasting steamer was taken for Baracoa on the north 
shore, a region where Charles Wright collected in the fifties. 
Most of the collecting here was done on the slopes of El Yunque. 
After three days Professor Holway left the party (cf. Jour. N. Y. 
Bot. Gard. 4: 81-84. 1903), and took steamer for Gibara, and 
