72 MISSOURI BOTANICAL GARDEN. 



bears hyaline conidia abundantly. In about a week, black, 

 long-beaked pycnidia appear on certain portions of the 

 mycelium, which assumes a brown color, the development 

 being similar to that described for C. pilifera. The fila- 

 ments of the hyaline portion of the mycelium measure 

 from 2/x. to 3/t in diameter, and the older brown-colored 

 filaments, in wood, from 3/t to 6/x. 



Conidia. 



The conidia are borne like those of C '. pluriannulata, 

 and are similar in shape (pi. 6, f . 2, 3). They are unicel- 

 lular, hyaline, elliptical to cylindrical, and measure 4/x to 

 8/t in length, and 1.5/x to 2/t in width averaging 6/t by 1.8/t. 



Perithecia. 



The perithecia are spherical, of a black color, with 

 black, long-beaked ostiola, terminating in long, wavy 

 hyaline filaments. The body of the perithecium is usually 

 nearly covered with dark brown hyphae or filaments. It 

 averages 200/t iu diameter, and the neck 1.5 mm. in length 

 and 25/t in width. The terminal filaments are long and 

 slender and measure 80/t by 1//., average (pi. 3, f. 1). 



The ascospores are elliptical to reniform in shape and 

 average 4.5/t by 1.5/x. in size. It will be noted that al- 

 though the perithecia of this species are larger than 

 those of C. pilifera the conidia are somewhat smaller. 

 Both ascospores and conidia usually germinate terminally, 

 some few exceptions having been noted. 



The name (J. capillifera is given to this species on 

 account of the long minute bristles which project from the 

 ostiolum. 



Ceratostomella pluriannulata n. sp. 



A block of blued sapwood from Quercus rubra was col- 

 lected in 1905 by Perley Spaulding and turned over to the 



