U! 



m 



.1 



y-.'A 



m 



U' 





G92 



black, offuseil, indotoi-iuinate crust in which the stipe is eoncealnl, 

 Porithecia fra^;ilc, of inediuin size. 



We have jiiven the diagnosis oi' this species, thouuh it is iinccr- 

 tain whetlier it lias yet l»een found in this country. Tiie s[u'cc. (lis- 

 tributcd in Ell. N. A. F. 858, arc 3fi/tilf'dtoufus/Kponi?n, (Ckc.). 



L. iiaviciiliire, Seliw. Syn. N. Am. 2017. 



Not pedicellate, hut contracted at base, elongated-ovate, sul). 

 tlexuous, naviculai', much like a Hysterium, especially in the yomm 

 state, before it becomes lully emergent, l)ein«>: then acuminate at i^icli 

 end with a central fissure; l>ut at a moi-e advanced stage it becomes 

 compressed and longitudinally striate, conchiform, black and obtuse ;if 

 the ends. 



On wood, Bethlehem, Pa. (8chw.). A doubtful species. 



L. Sassafras, St'liw. 1. c. 2018. 



Rather large, scattered, allied to L. myti/hmm, but much laiger 

 and more obtuse; subpedicellate, dilated above, nigose-striate, black, 

 not shining; aperture closed, nucleus wliite; sometimes opening in twn 

 directions. 



On bark of Samqfras, liethleliem. Pa. (Schw.). 



The fructification of this and the preceding species is unkudwn, 

 and the species arc donl)tful. 



HYST'eRIIIM, Tode. 



Fungi Meckl. II, p. 4. 



Perithecia supeificial or erumpent, oblong or ellipsoid, coiiieo- 

 carbonaceous, opening with a longitudinal cleft. Asci clavate or 

 cylindrical, mostly 8-spored, paraphysate. Sporidia oblong or elon- 

 gated, 2-or moi-e septate, brown. 



H. |)nlic.\i'e, Pers. Syn. p. 98. 



f/ysterographiumpiilicare, Cd.i. Icoiies V, p. 77, tab. V, fig. 61. 

 Hysteiiiim heluligniim. Scliw. Syii. N. Am. 2075, 

 Kxsicc. Rclim A.sc. 215.— K/o. K. Sel. ,^75. Rat). F. E. 2644.— Kav, F. Am. 762.— Kricg' r, 

 F. Sax 4.^.— KH. N. A. F. 457.— Dcsiii. I'l. Crypt. \'A. I, 779. 



Perithecia scattered or gi-egarions, superficial, variable in shape, 

 oblong, ellipsoid, longitudinally striate, Idack, lips obtuse, sligiitly 

 open exjjosing the linear disk, about 1 nnn. long and I nun. 1)1'omiI. 

 Asci clavate. Sporidia sul)biseriate, ol)Iong, straight or slight l\ 

 curved, 3-septate, hardly constricted, the two end cells paler, straight 



'•:'f!^ 



■' 'i; 



