Arthur: Uredinales of Porto Rico 77 



52. PUCCINIA FlMBRISTYLIDIS Arth. 



On Cyperaceae: 



Fimbristylis diphylla (Retz) Vahl, Barceloneta, April 6. 

 II, III, 26; Campo Allegra, April 21, II, III, 25. 

 The type collection for this species was on Fimbristylis poly- 

 morpha from Mexico. The present collections agree in both 

 uredinia and telia with the type material. Stevens made five 

 collections of the rust on F. diphylla, four in Porto Rico at Ponce, 

 Nov. 8, 191 3, 4381, Bandero, July 15, 191 5, 8565, Alto, July 16, 

 191 5, 8603, 8707, and one in Martinique 2970, all showing only 

 uredinia. A collection made by Clinton at Mayagiiez, in 1904, 

 on Fimbristylis sp., is identical, and the host is certainly F. 

 diphylla. Collections on F. ferruginea previously referred to this 

 species are now believed to belong to Uredo superior Arth. 



53. Puccinia Smilacis Schw. Nat. Ges. Leipzig 1 : 72. 1822. 



On Smilaceae : 



Smilax domingensis Willd., Maricao, March 16, II, 348. 

 The first record of this rust for the West Indies. 



54. Puccinia Cannae (Wint.) P. Henn. 

 On Cannaceae : 



Canna coccinea Ait., Maricao, March 16, II, 577. 



Canna sp. (cultivated), Barceloneta, Feb. 25, II, iii, 225, 



April 7, II, iii, 3J8 ; Mayagiiez, March 2, II, 224, March 



6, II, 222, March 9, II, 223. 

 Thalia geniculata L., Mayagiiez, March 1, II, 22J, March 



13-20, II, 226. 



55. Puccinia Polygoni-amphibii Pers. Syn. Fung. 227. 1801. 



On Polygon aceae : 

 Persicaria punctata (Ell.) Small {Polygonum punctatum 

 Ell), Mayagiiez, March 1, II, 261, April 3, II, 262; 

 Coamo, April 24, II, 260. 

 The first record for the West Indies. As usual for the rust 

 in warm regions, and especially on this host everywhere, only 

 uredinia occur. 



56. Puccinia Rivinae (Berk. & Curt.) Speg. 



On Petiveriaceae (Phytolaccaceae) : 



Rivina humilis L., Yauco, March 30, I, 356, I, II, III, J57. 



