Arthur: Uredinales of Porto Rico 
239 
The species was also collected at Ponce, on Sida sp., by E. W. 
D. Holvvay, Jan., 1911 ; at Vieques Island on Sida humilis, by J. 
A. Shafer, Jan., 1914, 2504A; and at Rio Piedras on Sida urens, 
by J. A. Stevenson 245^. It also occurs on a phanerogamic 
specimen of Wissadiila per iplocif alia in the herbarium of the 
N. Y, Bot. Garden, collected at Yauco by Underwood & Griggs 
625, June-July, 1901. 
The species, which is very common in warmer regions, is also 
represented in the writer’s herbarium from Bahamas, Cuba, Ja- 
maica, St. Croix, and St. Thomas. 
55. PucciNiA PsiDii Wint. Hedwigia 23: 177. 1884. 
Uredo flavidtda Wint. Hedwigia 24; 260. 1885. 
Uredo Myrtaceariini Paz. Hedwigia 29: 159. 1890. 
Uredo Eugeniarum P. Henn. Hedwigia 34: 337. 1895. 
Puccinia Jambosae P. Henn. Hedwigia 41 : 105. 1902. 
On IMyrtaceae : 
Jambos Jambos (L.) Lyons {Eugenia Jambos L.), Con- 
sume, April 27, II, 886, Oct. 23, 1912, II and HI, ( 5 jc; 
Maricao, without date, II, ijp, Oct. 12, II and HI, 182, 
April 2, II, 4^p, April 3, II and III, 7/0, II, 720; Rio 
Maricao above IMaricao, Sept. 30, II, 3626, Sept. 20, II 
and HI, 3632; Barros, Jan. 2, II and HI, 208; Villa 
Alba, Jan. 3, II and III, 328 ; Alonte de Oro near Cayey, 
Dec. 3, II, 57Jp; Lajome Alto, Dec. 3, II, 3739; El 
Gigante near Adjuntas, Dec. 15, 6017. 
Psidium Guajava L., Villa Alba, Jan. 3, II, 108. 
The rust has also been collected at the base of El Yunque, 
Cuba, March, 1903, by E. W. D. Holway and by Underwood & 
Earle. No other North American collections are known to the 
writer. 
The ample collections secured by Dr. Stevens have made it 
possible to get so good an understanding of the species and its 
hosts, that the synonymy can now be adjusted. Urediniospores 
of the five species, as named above, have been examined, and 
found to agree perfectly. Type material oi Uredo flavidula, as 
