70 



prominent, Asci clavate, 8-spored. Sporidia ovoid, subobtuse, straight, 

 subhyaline, 10x6 p. The spermogonial stage is Libertella rubra, 

 Bon. Spermatia filiform, uncinate, 30 p long. 



On living leaves of several species of Prunus (P. domestica, P. 

 spinosa). Credited to N. America by Sacc. in Syll. 



P.(?) Bumelise, (Schw.) 



Dothidea Bumelicz, Schw. Syn. N. Am, No. 1884. 

 Poly stigma Bumelice, Sacc. Syll. 4589, Cke. Syn. 177. 



Stroma orbicular, large, | cm. and over, ovate or of somewhat 

 irregular shape, conspicuous on both sides of the leaf; on the upper 

 side brick-red, and somewhat shining as if varnished, paler and with- 

 out any varnished appearance below. Perithecia (cells) few, scattered, 

 minutely pseudo-ostiolate and subprominent. 



Epiphyllous, on living leaves of Bumelia oblongifolia; found in 

 the Arkansas region by Nuttall. 



BYSSONECTRIA, Karsten. 



Symb. Mycol. Fenn. VII, p. 6 (1879). 



Stroma more or less byssoid. Perithecia subsuperficial, crowded. 

 Sporidia (in the American species) hyaline. Asci paraphysate. 



A. Sporidia continuous. 

 B. fimeti, (Cke.) 



Nectria fimeti ', Cke. Grev. XI, p. 108. 

 By ssonectria fimeti, Sacc. Syll. 4584, Cke. Syn. 349. 

 Fxsicc. Rav. F. Am. 646. 



Perithecia gregarious or scattered, golden-yellow, subglobose, 

 seated on a byssoid, golden-yellow stroma, bare and glabrous above, 

 tomentose below, finally collapsing. Asci cylindrical, 160-190 (p. sp. 

 112-115) x 10-12 p. Sporidia uniseriate, elliptical, continuous, hya- 

 line, 15x8 p.. 



On cow dung, Aiken, S. C. (Ravenel). 



B. Sporidia uniseptate. 



B. chrysocoma, Cke. & Hark. Grev. XII, p. 101. 



Stroma fibrose-byssoid, golden -yellow, effused. Perithecia gre- 

 garious, minute (100-150 p.), obovate, thin, dark yellow, semiimmersed 

 in the stroma. Asci clavate, 8-spored. Sporidia biseriate, narrowly 

 elliptical, uniseptate, hyaline, 10x2-2 \ p. 



On wood of Eucalyptus, California (Harkness). 



B. rosella, Cke. & Hark. Grev. 1. c. 



Delicate, effused, with a rose-colored tint. Hyphae creeping, inter- 

 woven, with the minute, obscure perithecia scattered on it. Conidia 



