y 



374 Grout: A little-known Mildew of the Apple 



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tircly new drawing by Prof. F. E. Lloyd, of the Teachers Col- 

 lege, New York City, have been prepared to interest eastern col- 

 lectors in this little known fungus. ■ ■ 



In 1895 this mildew was again collected in Ncwfane, on ad- 

 ventitious shoots from a tree growing about fifty rods from the 

 place of its first collection. This was distributed as no. 926 of 

 Ellis & Everharfs Fungi Columbiani. It had previously been 

 distributed as no. 3213 in their N. Am. Fungi, collected in Ames, 

 Iowa, by Prof. Pammcl. In the Ellis herbarium it is further rep- 

 resented from Missouri (Demctrio) and Kansas (Kellerman and 

 Swingle). Prof Burrill remarks of its distribution." Not appar- 

 ently very frequent but exceedingl)- abundant at times. Mississippi 

 Valley and probably eastward." 



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It seems probable that this mildew is not uncommon but is 

 rarely collected because its perithecia are on the sboots instead of 

 the leaves and also because the perithecia do not mature until very 

 late in autumn when no one thinks of collecting mildews. The above 

 mentioned peculiarities belong to the Eurojiean plant also accord- 

 ing to Professor Magnus and probably furnish the explanation of 

 the poor European exsiccati and the comparative ignorance of the 

 plant among European botanists. 



SiMiAEKOTiiECA MALI (Duby) Burrill ; Ellis & Everhart, N. Am. 



Pyreno. 7. 1892. 

 Mycelium growing on }-oun 

 perithecia seldom or never found on the leaves. Mycelium on the 

 leaves thin; fruiting mycelium more dense. Perithecia densely 

 aggregated in small dark brown patches, 75-95 //, reticulations 

 evident, appearing to be raised but in profile seen to be sunken , 

 appendages 4-12, clustered at the summit of the perithecia, sep- 

 tate, colored nearly the whole length, frequently nodulosely swollen 

 near the tips, length 4-8 times the diameter of the perithecium, 

 easily detached ; perithecia bearing on the under side an abundance 

 of short irregular rhizoidal appendages the nature of which is 



doubtful. Asci single, almost globose, 42-48 X 50-66//. Spores 

 8, elliptical, 13-21 a. 



On the upper parts of young twigs of Pyn^s Mains, especially 



in nurseries of young trees, and on suckers or adventitious shoots 



from old branches. 



