720 



L. typhinum, (Fr.) 



Hysterium typhinum, Fr. S. M. II, p. 590. 



Lopkodermium typhinum, Lambotte, Flor. Belg. II, p. 452- 



Perithecia innate, oblong, covered by the bullate-swollen epi- 

 dermis, finally bare, black, 2 lines (4 mm.) and over, long; lips swollen, 

 whitish within. 



On dead leaves of Tyjjha latifoUa, Guilderland, N. Y. (Peck). 



The above diagnosis is from Fries. We have not seen the New 

 York specimens, but specc. from Plowright (England) have asci &0- 

 75x6-8/.(. Sporidia filiform, 40-50 x 1-U /i. Perithecia elliptical, 

 rather obtuse, 1-1| mm. long by | mm. broad, depressed above when 

 young, covered by the epidermis. The specc. are evidently not mature. 



L. cla(16philum, (Lev.) 



Hysterium cladophilum. Lev. in Moug. and Nest. Exsicc. 1243. 



Hysterium Vaccinii, Cannich. Eng. Fl. V, p. 295. 



Sporomega cladophila, Duby, Hyst. p. 48. 



Lophodermium cladophilum, Rehm, Die Pilze, III, p. 42. 

 Exsicc. Desm. PI. Crypt. Ed. II, 564.— EU. N. A. F. 154.— Rab. F. E. 157.— Thum. F. 

 Austr. 507. 



Perithecia scattered and lying in various directions, elliptical, 

 oblong or short-linear, black, prominent, small (|-1 J mm.); lips swollen, 

 convex, leaving a narrow fissure between them, covered by the black- 

 ened epidermis, but when this falls away, becoming superficial. Asci 

 cylindrical. Sporidia filiform, hyaline, not thickened at the apex, 

 about as long as tlie asci. 



On dead branches of Vaccinium Pennsylvanicum, Newfield, N. J. 



L. nerviseqnium, (DC.) 



Hypoderma nervisequium, DC. Fl. Franc. VI, p. 167. 

 Lophodermium nervisequium, Rehtn, Die Pilze, III, p. 44. 

 Exsicc. Fckl. F. Rh. 2559 — Rab. Herb. Mycol. H, 722.— ^id. F. E. 2144. — Thum. F. Austr. 

 262.— id. M. U. 463, 1073.— Wnht. Fungi Hung. 65. 



Hypophyllous, at first standing singly along the midrib, at length 

 confluent, forming a continuous black line, erumpent, convex, black, 

 marked above with a distinct, longitudinal cleft, finally open so as to 

 expose the pale yellow disk, 1-1 1 mm. long, \-\ mm. broad. Asci 

 clavate-oblong, 60-90 x 12-15 ji, sessile, obtusely pointed above, 

 8-spored, with slender, filiform, undulate paraphyses. Sporidia fili- 

 form, clavate-thickened and bent at the tips, which are about 2 fj. thick. 



On leaves of Ahie& balsamea, Oaroga, N. Y. (Peck). 



The measurements are from Linhart's specc. and are about the 

 same as those given by Dr. Rehm. 



