74 



Mycologia 



show that possibly this rust is connected with Aecidium tubulosum 

 on Solatium. 



47. Puccini a canaliculata (Schw.) Lagerh. 



On Cyperaceae: 



Cyperus ferax L. C. Rich., Naguabo, cane field along rail- 

 road, April 19, II, jj; Naguabo, slopes of El Duque, 

 April 19, II, 14. 



Cyperus giganteus Vahl, Mayagiiez, March 13, II, 19. 



Cyperus laevigatus L., Mayagiiez, March 3, II, 18. 



Cyperus odoratus L., Martin Pena, April 10, II, 20; Na- 

 guabo, April 19, II, 21. 



Cyperus radiatus Rottb., Naguabo, April 19, II, 33. 



Cyperus reticulatus L., Naguabo, April 19, II, III, 22. 



Cyperus sphacelatus Rottb., Mayagiiez, March 6, II, 16; 

 Catano, April 20, II, 15; Campo Allegra, April 21, II, 

 17- 



Cyperus surinamensis Rottb., Naguabo, April 19, II, 11, 

 12. 



Kyllinga brevifolia Rottb., Martin Pena, April 10, II, 55. 



Kyllinga pumila Michx., Anasco, March 28, II, 54; Rio 

 Piedras, April 11, II, 52; El Yunque, April 12, II, 55. 

 In the one collection showing teliospores, which is on a host 

 new for the rust, the sori have an appearance quite unlike the 

 usual form. They are scattered singly, instead of being in con- 

 siderable, compact areas, and have a different color. The telio- 

 spores have a considerably thinner apex, being only 3-7 /x thick. 

 The form agrees well with the description of the Corsican species 

 P. Romagnoliana Maire & Sacc, but the telia of that species are 

 said to be surrounded by a heavy stroma. This could not be 

 matched in the Porto Rican material as no sori having teliospores 

 only were seen, the sori apparently being uredinial in which telio- 

 spores were developing, and not strictly telial. 



48. Puccinia angustatoides Stone, Bull. Torrey Club 36 : 549. 



1909. 

 On Cyperaceae : 



Rynchospora corymbosa (L.) Britton, Mayagiiez, March 

 13, II, so. 



