100 Twenty-fifth Report on the State Museuii. 



ItHYTISMA AxDROMEDyE 2^/\ 



Leaves of Andro?neda poUfoMa. Sandlake. September. 



Rhytisma Iltcis-Canadensis Schw. 



Leaves of Nemo-panilies Canadensis. Buffalo. Clinton. 



Rhytisma lineake Pecli. (Plate 1, figs. 2J:-26.) 



Plant linear, here and there interrupted or constricted, black ; 

 asci broad, clavate, eight-spored ; spores very long, obtuse, strongly 

 narrowed in the middle, involved in mucus, .002'-. 003' long. 



Leaves of pine trees, Pimcs Strohus. Guilderland, Greenbush 

 and Sandlake. June. 



This species is well marked by the singular form of the spores, 

 which appear to consist of two oblong portions connected by a 

 narrow neck. It forms a thick black line on the lower surface of 

 tlie leaf, often extending the entire length. The leaves that are 

 attacked soon die and fall to the ground. The specimens that I 

 have seen are seldom fertile, only those from the first named 

 locality containing spores. 



IIysterium ilicinum De Not. 



Fallen oak leaves. Watkins. September. 



IIysterium scirpinum Fr. 



Base of dead stems of Seirpus validus. Montezuma marshes. 

 September. 



IIysterium commune Fr. 



Dead stems of herbs. Yery common. Fertile specimens were 

 found in September. 



IIysterium insidens Schw. 



Chestnut rails and posts. Poughkeepsie. Gerard. Greenbush. 

 September to November. 



IIysterium tortile Schw. 



Bark of Janiperus Ylrginiana. Poughkeepsie. Gerard. 



IIypocrea gelatinosa Fr. 



Dead alder brandies. Center. 



ToRRUBIA OPHIOGLOSSOIDES Tul. 



Poughkeepsie. Gerard. 



Xylaria fiijformis a. <& S. 



Dead steins of lierbs in a wooded swamp. Portville. Septem- 

 ber. 



