T.KSS IMPORTANT DISEASES. 48 



mass, oblon<j or suhcvlindrio, aiul moasiuo tVoin a to 10 by 3 to G /i, 

 (PL V, ti^. I, (()• 1 lii^ fundus has not l)oeii foiiiul upon either leaves 

 or fruit in the fiehl, and appears to be of rather rare occurrence. 



PhyUo.sticta putrefadens Shear.-* — This fungus has been obtained 

 in two cases in cuhui-l\s made from the hypha* taken from the 

 interior of decayed berries. The berries were picked from the 

 sprayed i:)hits at AVhitesville, X. J., and kept in the hiboratory about 

 a month. The berries showed no external appearances which would 

 indicate that the disease was diflerent from that j)roduced by rot or 

 scald fungi. 



The pycnidia are gregarious, membranous, globose, or subglobose, 

 and vary from 75 to l.'iO /a in diameter (PI. V. fig. 10). The spores 

 are faintly yellowish in mass, ovoid or oblong-ovoid, and measure 

 from -t to (') by 2 to 3 jx (PI. V, fig. 10, a). In the cultures the fungus 

 first produced a thin, white, floccose mycelial layer over the surface of 

 the medium. This gradually i)ecame thicker and then produced a 

 layer of black pycnidia. AVhat appears to be the same fungus has 

 been found on leaves from Massachusetts. A fungus closely resem- 

 bling this one has also been collected in Massachusetts on cranberries 

 w^hich had been destroyed by the berry worm. The spores were 

 slightly larger and the ostiole different. This fungus presumably is 

 the pycnidial stage of some ascogenous fungus, but no such form has 

 appeared in any of the numerous cultures which have been made. 



Antho.stomeUa destruens Shear.-* — This fungus has only been 

 found in one instance, when it was obtained from a diseased berry 

 grown in Xew Jersey. The culture was made November 2 by trans- 

 ferring the fungous hyphiv from the interior of the berry, as in the 

 other cases mentioned. A white mycelial layer was first formed, and 

 this was soon followed by the development of black perithecia more 

 or less overgrown by the white filaments of the mycelium. The peri- 

 thecia are membranous or submembranous, globose, and 3.50 to 450 /* 

 in diameter (PI. IV, fig. 8). The asci are cylindric or cylindric- 

 clavate and vary from 150 to 225 by 14 to 18 /x (PI. IV, fig. 9). No 

 paraphyses have been found. The ascospores are dark browni, ellip- 

 tic, uniseriate, and 16 to 24 by 10.5 to 12 /* (PI. IV, fig. 10). This 

 fungus has not been found fruiting in the fiield and is apparently of 

 rare occurrence. None of the cultures made from ascospores has 

 shown any other spore form. The plant is perhaps rather closely 

 related to AnthostomeUa picacea (C. & E.) Sacc, which has been 

 found on Vaccinium, but it is easily separated by the size of the asci 

 and spores. 



Penicillium glaucum Link. — This fungiis occurs frequently on old 

 diseased fruit when it is kept in a sterile moist chamber. It grows 

 especially upon the old calyx of the flower and the apex of the fruit 

 and has been isolated from the pulp of decayed fruit. In cultures and 



110 



