NEW YORK STATE MUSEUM 



Injured stems and branches of cultivated raspberry. Menands. 

 April. 



The fungus is found in places where the epidermis has been 

 broken or removed by the swaying of the plants in the wind and 

 rubbing against each other. Numerous hyaline elliptical spores 

 about .0003 in. long, .0002 broad, are intermingled with the 

 larger spores of the species. 



Sphaerella rubina n. sp. 



Perithecia minute, .007 to .009 in. broad, commonly gregarious, 

 sometimes forming extended patches, submembranous, obscurely 

 papillate, pertuse, subglobose or depressed, at first covered by 

 the epidermis, becoming superficial when the epidermis falls 

 away, black ; asci cylindrical, subsessile, .003 to .0035 in. long, 

 .00045 to .0005 broad; spores uniseriate or subbiseriate, oblong, 

 obtuse, uniseptate, generally constricted in the middle, hyaline, 

 .0006 in. long, .00024 to .0003 broad, the upper cell often a little 

 larger than the lower. 



Stems of cultivated raspberries. Menands. April and May. 



This species is injurious to the plants it attacks. The affected 

 plants either die from the disease or are so weakened by it that 

 they are winter-killed wholly or in part. Generally the epider- 

 mis is whitened over the patches of the fungus, but sometimes 

 brown spots indicate the presence and location of the fungus. 

 The mycelium consists of brown septate filaments. From Didy- 

 rnella applanata, which this fungus resembles in some respects, it 

 is separated by the absence of paraphyses. 



Diaporthe robusta n. sp. 



Pustules numerous, erumpent, surrounded by a black circum- 

 scribing line and covered by a black crust ; ostiola obscure or 

 prominent and distinct; asci subfusiform, .003 to .0035 in. long, 

 .0006 broad in the widest part ; spores crowded or biseriate, 

 oblong-elliptical, obtuse, strongly constricted in the middle, .0005 

 to .0007 in. long, .00025 to .0003 broad, each cell usually containing 

 a single large nucleus. 



Bark of maple, Acer saccharinum and Acer dasycarpum. 

 Gansevoort. Peck. Alcove. Shear. 



This species is allied to D. acerina, but is distinguished from it 

 by the more numerous pustules, larger asci and larger, more 

 obtuse and more strongly constricted spores. 



