Arthur: Uredinales of Porto Rico 
251 
absence of teliospores the specific assignment must necessarily be 
somewhat doubtful. 
The only other West Indian material referred to this species 
comes from Cuba, and also shows only uredinia. It is on Eupa- 
torium villostim Sw., a common roadside weed in that region. 
The rust, which appears to be abundant, has been seen from 
three localities. It was collected at Gebara, March, 1903, by 
E. W. D. Holway, at Santiago de las Vegas, April, 1906, by W. 
T. Horne ly, and occurs on a phanerogamic specimen in the 
N. Y. Bot. Garden from Cabanas Bay, collected March, 1912, 
by Britton & Cowell 12816. 
69. PucciNiA TAGETicoLA Diet. & Holw. Bot. Gaz. 24: 26. 1897. 
On Carduaceae: 
Tagetes patula L., Maricao, Jan. 10, II, 200. 
This common Mexican rust has not before been reported from 
the West Indies. The host here represented is the French mari- 
gold of the gardens, introduced into cultivation over three hun- 
dred years ago from Mexico. 
70. PucciNiA Synedrellae P. Henn. Hedwigia 37 : 277. 1898. 
Puccinia solida Berk. & Curt. Jour. Linn. Soc. 10 : 356. 1869. 
Not P. solida ScJnv. 1832. 
Puccinia Emiliae P. Henn. Hedwigia 37 : 278. 1898. 
Dicaeoma cubense Kuntze, Rev. Gen. 3® : 466. 1898. 
Puccinia Tridacis Arth. Bull. Torrey Club 33: 156. 1906. 
Puccinia Eleutherantherae Diet. Ann. Myc. 7 : 354. 1909. 
On Carduaceae: 
Eleutheranthera ruderalis (Sw.) Sch. Bip., Mayagitez, 
May 24, 1542; Aguada, Nov. 22, 5095. 
Emilia sonchifolia DC., Hormigueros, Jan. 14, 212; 
Guayama, Aug. 28, 28gg; Dec. 4, 5342; Yauco, Oct. 3, 
3141; San German, Nov. 8, 5803. 
Synedrella nodiflora (L.) Gaertn., Barros, Jan. 2, 130; 
Caguas, June 5, 2168; Cabo Rojo, June ii, 2183; St. 
Catalina, Aug. 28, 2333; Yauco, Oct. 3, 3228 ; Isabela, 
Oct. 22, 3336; Rosario, Oct. 27, 3830, without date, 
