228 



which is confluent with the perithecinm, being visible. Similar to 

 L. Thapsi. 



On dead stalks of Pastinaca, &c, Bethlehem, Pa. 



L. abbreviatum, (Schw.) 



Sphceria abbreviata, Schw. Syn. N. Am. 1606. 

 Lophiostoma abbreviatum, Cke. Syn. 3716. 



Perithecia subaggregated, erumpent among the fibers of the wood 

 by which they are covered, except the dilated-cylindrical, very black; 

 central, subelongated ostiolum, globose-conical, somewhat shining, but 

 not glabrous, finally becoming ash-color or brown. 



On oak branches, Bethlehem, Pa. 



L. subrugosum, (Schw.) 



Sphceria subrugosa, Schw. Syn. N. Am. 1609. 

 Lophiostoma subrugosum, Cke. Syn. 3712. 



Perithecia scattered or gregarious, subimmersed, finally erumpent, 

 spherical or elongated, crowned by a laterally elongated ostiolum 

 reaching half way across the apex of the perithecium and opening like 

 a Hysterium. Perithecia with a light colored nucleus, at length 

 empty and black, outside minutely rugose-punctate. 



Rarely met with on decaying wood of Catalpa, Bethlehem, Pa. 



L. hysterioides, (Schw.) 



Sphceria hysterioides, Schw. Syn. N. Am. 1610. 

 Lophiostoma hysterioides, Sacc. Syll. 5523. 



Perithecia scattered or gregarious and aggregated, hemispherical 

 or elliptical, or conic-globose, prominent, very black and glabrous, 

 truncate and subcarnose above. Ostiolum forming an elongated crack 

 across the truncate apex. The most distinct of the whole lot. 



Bursting out from the bark and wood of Kalmia, Bethlehem, 

 Pa. (Schw.). 



C. Sporidia hyaline, two- or more-septate (Lophiotrema). 

 L. parasiticum, Pk. 40th Rep. p. 71. 



Perithecia crowded, subsuperficial, 350-500 /j. diam., clothed with 

 minute, subcervine, pulverulent tomentum, becoming blackish-brown 

 with age, the ostiola prominent, subterete or compressed, clothed like 

 the perithecia. Asci subclavate, 120-150 x 15-18 (i. Sporidia crowd- 

 ed, at first biconical, then triseptate, constricted in the middle, hyaline, 

 30-40 x 7-8 fjL 



On old Hypoxylon Morsel, New York. 



