1918] ARTHUR—UREDINALES 461 
those collected by Dr. G. von LaGERHEIM, the eminent mycologist 
of Stockholm, Sweden, who spent some time at Quito, Ecuador. 
He published no connected account of his work at Quito, although 
in a “vorliufige Mittheilung,” describing 4 new genera (Ber. 
Deutsch. Bot. Gesell. 9:344. 1891), he speaks of “my detailed 
“Monographie der Uredineen Ecuadors,’ now in course of comple- 
tion.’’ He, however, distributed his material freely, not only the 
specimens which he was able to positively identify, but others as 
well, partly unnamed and partly with suggested names for forms 
that appeared to be new species. This mine of rich material, for 
many strange forms are being uncovered from time to time and 
placed in newly erected genera or made to explain obscure relation- 
ships, has been drawn upon in the present paper, and 3 of the 
LAGERHEIM species are here published, one in a new genus, and 
all in genera other than previously suggested. 
The present contribution to the rusts of the Andes, with the 
exception of 3 collections by LAGERHEIM and two by ULE, comprises 
material secured by Dr. and Mrs. J. N. Rose during a South Amer- 
ican exploration in 1914 primarily for cacti. Dr. Rosr’s broad 
botanical interests and generous disposition toward workers in 
other botanical lines than his own were shown in his letter of May 8, 
1914, to the writer, announcing his proposed trip: ‘You will 
probably be surprised,” he says, writing from the National Museum, 
“to learn that Mrs. Rose and I plan to leave here (Washington, 
D.C.) about June ro for an extended trip through western South 
America, especially Peru and Chile. I wonder whether it will be 
worth while to collect any of the parasitic fungi.” Upon assuring 
him that the region to be visited was one of more than ordinary 
interest to American uredinologists he wrote shortly before depart- 
ing: “I shall take great pleasure in collecting all of this kind of 
material (rusts) that I can.” 
In transmitting the rust collections, 40 numbers i in all, after his 
return from 6 months in South America, he says: “I fear that you 
will be disappointed that there are so few of them,’’ and as explana- 
tion for the small number, “because I have been trying to collect 
parasitic fungi where none grew,” in the dry regions of western 
South America where species of Cactus most abound. He also felt 
