1895.] NATURAL SCIENCES OF PHILADELPHIA. 431 



Perithecia epiphyllous, solitary, one in the center of each spot, 75 //. 

 diam. Sporules subglobose, hyaline, nucleate, 5-6// diam. 



Phyllosticta castanicola E. & E. 



On leaves of Castanea ehrysophylla, Sisson, Cala., July, 1894. 

 Prof. Marshall A. Howe, No. 122. 



Spots epiphyllous, dark-brown, suborbicular, 2-5 mm. diam., with 

 a narrow, dark, subfimbriate border, scarcely visible on the lower 

 face of the leaf. Perithecia crowded on the spots, buried in the sub- 

 stance of the leaf, hard and tough, orbicular or elliptical, 80-100 >j. 

 diam., sometimes 2—3 confluent, the apex erumpent and broadly 

 perforated. Sporules abundant, minute, oblong, 3-3? x 1 \— 1? /<, 

 hyaline. The tough, almost sclerotioid perithecia indicate that this 

 may be the stylosporous stage of some Phyllachora, or other dothide- 

 aceous fungus. Very different from Ph. Castaneae E. & E. 



Asteroma infuscans E & E. N. A. F. 3.361. 



On dead stems of Iva xanthifoliit, Fort Collins, Colo., Feb., 1895. 

 C. F. Baker, No. 234. 



Fibrils appressed, branched, radiate, at length often disappearing, 

 leaving the surface of the stem blackened for several 5-10 cm. in 

 extent, the blackened areas mostly surrounding the stem and more 

 or less distinctly limited. Perithecia abundant, pustuliform, per- 

 forated above, 90-150 p. diam. Sporules oblong-elliptical, hyaline, 

 continuous, 3-5 x 1-1 J fi. 



Asteroma Parkinsoniae E. & E. 



On pods of Parkinsonia Torreyana, Tucson, Arizona, Sept., 1893. 

 Prof. J. W. Tourney, No. 14. 



Perithecia emergent-superficial, subdepressed, 150,". diam., at first 

 a single one seated in the center of an appressed, gray, radiating 

 mycelium, at length smaller perithecia appear along the radiating 

 arms of the hyphae. Sporules oblong, hyaline, 2-3-nucleate, 15— 

 20 x 5-7 ft, ends obtusely rounded. 



Aposphaeria Ohiensis E. & E. 



On rotten wood. Ohio. Morgan, No. 1,068. Perithecia gregar- 

 ious, depressed-globose, minute, 150//, papillate. Sporules oblong- 

 elliptical, continuous, hyaline, 2|-3 x 1 p., borne on stout, fascicu- 

 late basidia 10—12 x l?-2 <>. below, slightly tapering above. 



Dothiorella fraxinicola E. & E. 



On bark of dead Fraximis. Long Pine, Nebraska, June, 1895. 

 Rev. J. M. Bates. 



