263 



Puccinia Leptochloae sp. nov. 



II. Uredinia amphigenous, oval or oblong; urediniospores 

 globoid, 21-24 by 23-26^1; paraphyses none; wall light cinna- 

 mon-brown, moderately thick, 2-2.5 M> minutely and closely 

 verrucose, the pores usually 4, sometimes 6, scattered. 



III. TeHa amphigenous, crowded, oval to linear, 0.5-2 mm. 

 long, early naked, blackish-brown; teliospores oblong or broadly 

 ellipsoid, 21-27 by 26-35 M. rounded at both ends, slightly con- 

 stricted at septum; wall dark chestnut-brown, 2 /jl thick, con- 

 siderably thicker above, 3-7 /x; pedicel golden, once length of 

 spore. 



On Leptochloa filiformis (Lam.) Beauv. (L. mucronata pulchella 

 Scribn.), Guaymas, Mex., 1887, Dr. Edward Palmer 6Q4. The 

 species was detected by Dr. P. L. Ricker on a phanerogamic 

 specimen in the National Herbarium some years ago. This 

 host collection is cited in Hitchcock's Mexican grasses (Contr. 

 Nat. Herb. 17: 349. 1913)- Only the type collection is yet 

 known, although the host has an extended range from Virginia 

 to the Pacific coast and southward into South America, including 

 the West Indies. 



The species has some resemblance to Puccinia Jamesiana 

 Arth., which occurs on Leptochloa duhia in central Mexico, but 

 differs in having the urediniospores verrucose instead of echinu- 

 late, and with much thicker walls, as well as in other particulars. 



Puccinia unica Holway sp. nov. 



II. Uredinia not seen; urediniospores intermixed with the 

 teliospores, ellipsoid, 19-24 by 24-29 /z; wall cinnamon-brown, 

 1.5-2 IX thick, inconspicuously echinulate, the pores 4 or 5, 

 approximately equatorial; paraphyses numerous,' intermixed, 

 capitate, 13-18 ix broad above, up to 60 /x long, the wall about 7 /i 

 thick above, becoming 2 ix thick in the pedicel which is often 

 solid. 



III. Telia caulicolous and epiphyllous, crowded and often 

 confluent in lines, elliptical or oblong-linear, 0.5-2 mm. long, 

 early naked, pulvinate, blackish-brown; teliospores ellipsoid, 

 21-26 by 29-39^1, rounded at both ends, slightly or not con- 

 stricted at septum; wall dark chestnut-brown, smooth, 2-3 /^ 

 thick, slightly thicker above, 3-6 ix; pedicel twice length of spore 

 or more. 



