140 



Mycologia 



golden- or light cinnamon-brown, paler below, very thin, about 

 I /X, thicker at apex, 1.5-5 smooth ; pedicel about half length of 

 spore^ slightly tinted. 



On Cyperaceae: 



Cypenis diffusus Vahl, Panama. 



Type locality : Antioquia, Columbia, on Cyperus diffusus. 



Distribution : Panama ; also in South America. 



Puccinia antioquiensis as described by Mayor from Columbia 

 is a decidedly characteristic species. The pale thin walls of both 

 urediniospores and teliospores, and the slight thickness at the apex 

 of the teliospores, put the species in a class by itself. Our speci- 

 men from Panama is oh the same host as the type specimen and 

 agrees perfectly in all respects. 



4. Puccinia abrepta sp. nov. 

 O and L Pycnia and aecia unknown. 



IL Uredinia hypophyllous, scattered, oval or oblong, 0.3-1 mm. 

 long, somewhat bullate, rather tardily naked, ruptured epidermis 

 conspicuous, cinnamon-brown ; urediniospores ellipsoid or obo- 

 void, 16-19 by 23-26 the wall cinnamon-brown, i-i.^fi thick, 

 moderately or sparsely echinulate ; the pores 3, equatorial, covered 

 with a swollen hyaline cuticle. 



III. Telia not seen ; teliospores narrowly ellipsoid or oblong, 

 13-16 by 27-45^, rounded above and slightly narrowed below, 

 somewhat constricted at septum ; the wall light cinnamon-brown, 

 thin, I yu, or less, thicker above, 3-5 /x, smooth ; pedicel about one- 

 half length of spore, tinted. 



On Cyperaceae: 



Cyperus ferax L. C. Rich, Costa Rica. 



Type collected at San Jose, Costa Rica, Jan. 8, 1916, E. W. D. 

 Hohvay 38 j. 



Distribution : Known only from the type locahty. 



The specimen here used as the basis of a new species differs 

 from Puccinia antioquiensis in tht darker, thicker-walled uredinio- 

 spores and in the thicker apex of the teliospores. It differs from 

 Puccinia Cyperi particularly in the smaller size of the uredinio- 

 spores and in the thinner apex of the teUospores. The host of the 



