ARTHUR AND JOHNSTON: UREDINALES OF CUBA 103 
critical determination of hosts, he gave considerable attention to 
these fungi during the present expedition. The result was that 
the two months' exploration yielded some 60 specimens of rusts, 
largely from the Isle of Pines, and largely collected by Mr. Wilson, 
part of which represent species, as well as hosts, not otherwise re- 
ported. This number is second only in size and importance to the 
contributions of Mr. Johnston, and considerably larger than the 
number secured during the first expedition to the island in 1903, 
when Professor Holway devoted special attention to the rusts, 
although under unfavorable conditions. Mr. Wilson's intimate 
knowledge of the phanerogamic flora of Cuba gave him unusual 
advantage as a collector of parasitic species. The whole insular 
list, as here presented, has also been made more valuable and 
accurate by Mr. Wilson's critical examination of the hosts of many 
collections. While engaged in this helpful study from time to 
time he detected rusts on the phanerogamic specimens in the her- 
barium of the New York Botanical Garden, and in this way added 
to the completeness of the presentation. 
Other expeditions to Cuba from the New York Garden are not 
mentioned here, as they yielded no collections of rusts, although 
rusts have later been found on the phanerogamic specimens se- 
cured by some of them. 
The names of a few persons who are credited with collections, 
and who were not connected at any time with the Cuban Experi- 
ment Station or the expeditions of the New York Botanical Gar- 
den, should be mentioned. 
Ramon de la Sagra* came to Cuba from Spain in 1822 and be- 
came professor of botany in the university and director of the 
botanical garden at Havana. He took great interest in the flora 
of the island, collecting extensively all kinds of plants, and securing 
the assistance of many specialists in Europe and especially of P. de 
Candolle in the determination of the species. By his adminis- 
trative ability and his numerous important writings he became 
famous throughout the island, and was assisted in his work by 
many local collectors. He projected and edited a monumental 
folio work in twelve volumes on the physical, political and natural 
* For brief biographical account by Ignatio Urban, see Symbolae Antillanae 3: 
117-118: 1002. 
