Arthur : New species of Uredineae 29 



resemblance. In P. Eleocharidis the stroma is absent, and the telia 

 are simple, while the teliospores are more rounded above. The 

 urediniospores of both species differ conspicuously from those of 

 Undo superior Arth. in size. All three species occur in Porto 



Rico. 



Puccinia Pattersoniana sp. no v. 



II. Uredinia epiphyllous, oblong, soon naked ; urediniospores 

 ellipsoid, 21-26 by 28-34//, wall golden-yellow, thick, 3/i, sparingly 

 and prominently verrucose, pores 3 (?), approximately equatorial. 



III. Telia epiphyllous, intercostal, oblong-linear, soon naked, 

 ruptured epidermis noticeable ; teliospores oblong, somewhat ang- 

 ular, 16-22 by 30-3 7/i, slightly or not constricted at septum, 

 rounded or obtuse at both ends ; wall golden-brown, uniformly 

 thin throughout, i/z, appearing smooth when wet, finely and 

 closely striate when dry: pedicel delicate, 5-7 fi thick, once to 

 twice length of spore, nearly colorless. 



On the rough, or concave side of leaves of Agropyron spicatnm 



rsh) Rydb., Sandcoulee, Cascade Co., Montana, July, 1888, 



K IV. Anderson. 



The urediniospores of this species somewhat resemble those 

 of Puccinia Agropyri, but the teliospores are very unlike any 

 known North American rusts on grasses, especially in the uni- 

 formly thin walls and surface striation. The specific name is 

 given in recognition of the services rendered to mycology by Mrs. 

 Flora W. Patterson, curator of the cryptogamic herbarium of the 

 United States Department of Agriculture. 



Cronartium Comptonia? sp. nov. 



II. Uredinia hypophyllous, scattered or somewhat gregarious, 

 round, very small, about o. 1 mm. across, dehiscent by a central 

 rupture, soon wide open and naked, pulverulent ; peridia rather 

 firm, cells polygonal, at the sides with walls uniformly thin, about 

 i/i, at the top with the inner walls greatly thickened, up to 10//; 

 urediniospores oval or obovate, 16-21 by 23-3 i/i, wall colorless, 

 rather thick, 2.5/i, sparsely and finely echinulate. 



III. Telia hypophyllous, filiform, 40-ioou thick, 0.5-2 mm. 

 long; teliospores fusiform-oblong, 13-17 by 28-56/i, obtuse at 

 both ends; walls nearly colorless, smooth, thin, 1-1.5/*. 



On Compto?iia peregrina (L.) Coult. (C. asplenifolia Gaertn.), 

 Egg Harbor, N. J., Sept. 7, 1874, / & Arthur (type); Belle 

 Plain, N. J., Oct. 15, 1902, C. L. Shear (in Ellis & Everhart, 



