715 



The perithecia are I'ather smaller than in L. melalevcvm, and though 

 they have the white niargined lips of that f^pocies, the fructification "is 

 exactly that of Z. nmculare. 



L. melaleuciim, (Fr.) 



Hysterium melaleucum, Fr. Obs. Mycol. 1, p. 192, tab. II, fig. 1. 

 Lophodermium melaleucum, De Not. Pir. Istr. p. 40. 

 Exsicc. Fckl. F. Rh. 736, Sacc. M. V. 1478. 



Perithecia on pale or whitish, subdeterminate spots, innate, con- 

 vex-erumpent, elliptical or siiborbicular, obtuse, mostly simple, straight, 

 black, 1 X |-| mm., at first depressed, then carinate, at length opening 

 by a lineal- crevice and exposing the white (sometimes yellow or 

 greenish) margin of the lips. Asci cylindric-clavate, obtusely pointed 

 at the apex, stipitate, 70-75x9 pi, with filiform paraphyses, 2 fi thick 

 and subundulate-bent. Sporidia filiform, straight, continuous, hyaline, 

 50-55 X 2 fjL, lying parallel, 8 in an ascus. 



On living leaves of Rhododetxlron Catawbiense, Roan Moun- 

 tain, North Carolina (Scribnei-). 



This agrees so well with specc. and diagnosis of L. melaleucum, 

 that we refer it here without hesitation. The lips when first opened 

 have a yellow margin, and it cannot therefore be the typical form. 



L. sphserioides, (A. & S.) 



Hysteriuvi sphcerioides, A. & S. Conspect. Fudg. Nisk. p. 57, tab. X, fig. 3. 

 Lophodermium spfusrioides, Dliby, Hyst. p. 44. 



Perithecia scattered on paler spots, innate, hemispherical, about 

 I mm. diam., brownish-black, pierced above with a nearly round open- 

 ing or with a narrow, slightly white-margined cleft extending nearly 

 across the apex. Asci clavate, stipitate, 60-65 x 7-8 [x, with filiform 

 paraphj'ses longer than the asci and mostly recurved or hooked at the 

 tips. Sporidia 8 in an ascus, filiform, lying parallel, hyaline, about 

 35x11 [1. 



On dead leaves of Ledum pahistre, Vermilion Lake. Minnesota 

 (Holway), New York State (Peck). 



The diagnosis is from the Minnesota specimens. 



L. thmidnm, (Fr.) 



Hysterium tumidum, Fr. S. M. II, p. 591. 

 Coccomyces tumida, De Not. Giorn. Bot. Ital. II, p. 38. 

 Lophodermium tumidum, Rehm, Die Pilze, III, p. 40. 

 Exsicc. Fckl. F. Rh. 746.— Rehm Asc. 519.— Romell, Fungi Scand. 84. 



Perithecia scattered on pale spots, innate, swoUen-erumpent, ellip- 

 tical, subacute at the ends, shining-black, the sharp, slightly open lips 

 leaving only a nai-row cleft between them, and partially exposing the 



