Arthur: Uredinales of Porto Rico 
253 
71. PucciNiosiRA PALLiDULA (Spcg.) Lagcrh. Tromso Mus. 
Aarsh. 16: 122. 1894. 
Aecidiella Trhimfettae Ellis & Kelsey, Bull. Torrey Club 24: 
208. 1897. 
On Tiliaceae: 
Triumfetta rhomboidea Jacq., Santurce, Jan. 22, 256; 
Mayagiiez, Feb. 8, 282; Aguada, Nov. 22, 50pp. 
Triumfetta sp., Villa Alba, Jan. 3, iii; Mayagiiez, May 
3, 1163, 1180, June 13, 221 y, Oct. 31, 3928, 3943; 
Bayamon, May 21, 1883; Aibonito, June 5, 2134; 
Maricao, Oct. 20, 3313; Rosario, Oct. 27, 3/69; El 
Gigante near Adjuntas, Dec. 15, 6022; River junction 
below Utuado, 6039. 
The other Porto Rican collections examined are on T. Lappida 
L., at Ponce, by A. A. Heller 6184, 1902, on T. rhomboidea Jacq., 
at Santurce, by Cook & Collins 292, at Mayagiiez, by G. P. 
Clinton 773, 1904, and on Triumfetta sp., at Rio Piedras, by 
Johnston & Seaver 991a, 1913. 
IMaterial has also been examined from Guadeloupe, on T. 
grandiflora, Vahl., and from Jamaica on T. semitriloba L. 
The species was gathered by Stevens at Caracas, Venezuela, 
July 15, 1913, on an undetermined species of Triumfetta. 
The leaves of most species of Triumfetta are not distinguish- 
able with certainty, and where inflorescence does not accompany 
the collection, specific determination of the host is usually im- 
practical. 
The transfer of the genus Pucciniosira from the family Uredi- 
naceae to the Aecidiaceae is based upon a number of considera- 
tions, among which the aecidioid peridium and the intercalary 
cells of the catenulate teliospores have had much weight. 
Form-genus: Aecidium. 
Probably all forms listed here belong to heteroecious species 
under Aecidiaceae. 
