199 HYPOXYI.ON. 



Ascophore, minute, head globose, stem long, slender, 



flexuous ; asci with a tuber at the apex ; sporidia colorless, 



filiform. 



Growing on a species of grass along Spring Creek, Ivehigli County, Pa. 

 The sclerotium is not near so large as that growing on rye. 



Genus XVII. XYI^ARIA. Fr. 



Stroma corky, perithecia immersed, stipitate, sporidia 

 uniseriate. 



X. polymorpha. Grev. 

 Black, erect, hymenium bearing perithecia in every part. 



Common in lawns under shrubbery throughout the Valley. Easily 

 identified by the black color. 



X. digitata. 



Between fleshy and corky, caespitose, heads cylindrical, 

 reddish brown, then black, tips sterile ; sporidia uniseriate, 

 dark brown, curved. 



On maple logs, jungle, Trexlertown, Pa. 



A synopsis of the North American species Xylaria are fuU}^ given in 

 Journal of Mycology, by Ellis and Everhard, Vol. Ill, 1SS7 ; also in Peck's 

 Reports. 



Genus XVIII. HYPOXYI^ON. 



Convex or plane, stroma corky or brittle. Perithecia im- 

 mersed ; sporidia ovate, or lanceolate, curved, dark colored, 

 simple. This genus contains quite a number of good species, 

 but, I am sorry to say, very few are fully identified. The most 

 common in our Valley is the H. multiforme and H. rubigi- 

 nosum. For further information see Journal of Mycology, by 

 Ellis and Everhard, Vol. X, 1889. 



