190 



Perithecia scattered, semiimmersed, globose, smooth, glabrous, 



black. Ostiolum cylindrical, equal, about half as long as the pcrithe- 

 cium. Asci cylindrical, briefly pedicellate, 100 x 10 //. Sporidia uni- 

 seriate, elliptical, pale brown, 15-17 u long. 



On rotten wood, Bethlehem, Pa. 



At first immersed, finally emergent and bare, very smooth, almost 

 shining, fragile. t/*-*>u 



. rubefaciens. (Pk.) 



Sphceria rubefaciens, Pk. 28th Rep. p. 79. 

 Ceratostoma rubefaciens, Sacc. Syll. 777. 



Perithecia minute, scattered, subglobose, smooth, black, nearly 

 free, abruptly tapering into the long, slender, subulate ostiola. Asci 

 clavate, fugacious. Sporidia elliptical, brown, 4-5x4^ //. 



On decorticated wood of deciduous trees, New York State (Peck). 

 The surface of the wood is variegated with red stains. 



C. setigerum, E. & E. (in Herb.) 



Perithecia densely gregarious, superficial, hemispherical, \-\ mm. 

 diarn., cinereous-black, clothed with long, spreading, black bristles. 

 Ostiola erect, stout, rough, slightly swollen at the tip, black, |-1 mm. 

 long. Asci oblong-cylindrical, broadest in the middle, p. sp. 12-15 x 

 4 [i, aparaphysate. Sporidia conglomerate-biscriate, elliptical, olive- 

 brown, continuous, about 3xl| //. 



On decaying oak wood, Ohio (Morgan, 895). 



C. Avocetta, (. & E.) S a 



Sphceria Avocetta, C. & E. Grev. VIII, p. 15. 

 Ceratostoma Avocetta, Sacc. Syll. 774. 

 Sphceria caminata, C. & E. Grev. VI, p. 94. 

 Exsicc. EH. N. A. F. 779. Rav. F. Am. 673. 



Perithecia scattered, globose, \ mm. diam., entirely buried in the 

 wood, with the tips of the cylindrical (J-IJ mm. long) ostiola project- 

 ing or, by the decay or weathering away of the wood, becoming super- 

 ficial; often in cracks of the wood, one side of the perithecium being 

 buried and the other projecting into the open fissure; in that case 

 bald and smooth, but when buried in the soft wood, more or less 

 fibrous-strigose, with brownish hyphae. Asci p. sp. cylindrical, 45-50 

 x 7-8 /i, with paraphyses. Sporidia uniseriate, often oblique, brown, 

 oblong-elliptical, 1-2-nucleate, 8-10 x3| /i. 



On rotten wood of deciduous trees, common around Newfield, and 

 probably in other localities. 



