Arthur: Uredinales of Porto Rico 



73 



and it is now found that the two are identical. The latter form 

 was obtained on an undetermined species of Panicum in Brazil. 

 Both forms show uredinia and telia, and if any difference can be 

 seen in them, it is a somewhat greater regularity in the form of the 

 teliospores for P. Puttemansii, a variation well known in a 

 number of grass rusts. 



45. Puccinia levis (Sacc. & Bizz.) Magn. 

 On Poaceae : 



Paspalum fimbriatum H. B. K., Yauco, March 30, II, 418. 

 P asp alum millegrana Poir., Campo Allegra, April 21, II, 

 439- 



The species is now reported for the first time on Paspalum 

 millegrana. 



46. Puccinia substriata Ellis & Barth. 



On Poaceae: 



Chaetochloa geniculata (Lam.) Millsp. & Chase (C. im- 

 berbis Scribn.), Rio Piedras, April 22, II, III, 438. 



Eriochloa subglabra (Nash) Hitchc, Mayagiiez, Feb. 29, 

 II, 401, March 1, II, 400, March 3, II, 403, March 9, II, 

 402, March 13, II, 398, 399; Rio Piedras, March 11-17, 

 II, 404. 



I chnanthus p aliens (Sw.) Munro {Panicum pollens Sw.), 

 Mayagiiez, March 2, II, 396; El Yunque, April 12, II, 

 HI, 397- 



Paspalum paniculatum L., Mayagiiez, March 13, II, 392; 

 Maricao, March 15, II, III, 391 ; San German, April 1, 

 II, 393; Naguabo, April 19, II, 411; Rio Piedras, April 

 23, n, 390. 



Syntherisma digitata (Schwartz) Hitchc, Barceloneta, 

 April 6, II, 431; Naguabo, on slopes of El Duque, April 

 19, II, III, 444. 



Valota insular is (L.) Chase, Boqueron, March 11, II, 394; 

 San German, April 1, ii, 447; Campo Allegra, April 21, 



11, 436. 



All the above hosts, except Paspalum paniculatum, are new for 

 the island, and with the exception of Chaetochloa geniculata are 

 now first given for the species. Field evidences were obtained to 



