60 Thirty -first Report on the State Museum. 



our plant as a variety, giving it the name X. digitata var. Americana. It is 

 frequent on decaying wood and old prostrate mossy trunks. 



The following tabular arrangement will exhibit the principal distinguishing 

 features of the New York species thus far reported : 



New York Species of Xylaria. 



Club everywhere fertile, obtuse. 



Spores .0008'-. 0012' long X. polymorpha Grev. 



Spores .0004' long X. corniformis Fr. 



Club sterile above, subacute or attenuated. 

 Sterile apex short, subacute. 



Club irregular, subovate, large X. grandis Pk. 



Club regular, subcylindrical X. acuta Pk. 



Sterile apex acuminate or attenuated. 



Stem short, villose X. Hypoxylon Gfrev. 



Stem not villose. 



Perithecia numerous, little prominent. 

 Stems generally connate at the base or digitately 



branched X. digitata Grev. 



Stems always simple X. graminicola Ger. 



Perithecia few, very prominent X. filiformis A. & JS. 



In X. acuta the short, sterile apex sometimes appears like a short mucro- 

 nate point, and sometimes it is quite obsolete, so that the plant might be mis- 

 taken for X. corniformis, but for its larger spores. Its thicker club, simpler 

 habit, and peculiar apex, separate it from X. digitata. 



X. graminicola might easily be taken for a simple form of X. digitata v. 

 Americana. X. Hypoxylon is extremely rare with us. 



Spileria eximia Pk. 



Owing to the delay in the issue of the Twenty-eighth Report, the name of 

 this species was antedated by $. amphicornis Ellis. 



SPHiERIA MORBOSA ScllW. 



This deleterious fungus was found on branches of the wild black cherry, 

 Prunus serotina, in Keene Valley, Essex county. It is now known to occur 

 on Prunus domestica, P. Americana, P. Cerasus, P. Virginiana, P. 

 Pennsylvania and P. serotina. Two of these are plum-trees — one intro- 

 duced, the other native — and the remaining four are cherry trees, of which 

 the three last are indigenous. 



In the preceding pages, when no name is added to the' station or stations, the 

 plant has been found therein by the writer. Dates signify the time when the 

 specimens were collected, and therefore indicate, to some extent, the time of the 

 occurrence of the plant. 



G-rateful acknowledgements are rendered to those Botanists who have kindly 

 aided me by contributions of specimens. Their names appear in the preceding 



Respectfully submitted, 



CHARLES H. PECK. 

 Albany, January 4, 1878. 



