541 



4-8 in a stroma, closely packed, ovate or subangular from compression, 

 about J mm. diam., with whitish, waxy contents. Asci (p. sp.) 75-85 

 x20 /i, mostly only 6-spored. Sporidia oblong-cylindrical, yellowish, 

 3- (exceptionally 5-) septate, 30-40x4-7 //, slightly constricted at the 

 septa. The young stromata contain an abundance of pycnidial spores 

 (about the size and- shape of the ascospores), borne on stout or branch- 

 ing sporophores about as long as the spores themselves. 



On dead hickory limbs (Gary a), Lyndonville, N. Y. (Fairman). 



Ps. sigmoidea, (C. & E.) 



Melanconis sigmoidea, C. & H. Grev. VI, p. 92, pi. 100, fig. 26. 

 Pseudovalsa sigmoidea, Sacc. Syll. 3352, Cke. Syn. 2099. 



Stromata conical or conic-hemispherical, 1-2 mm. diam., orbicular 

 or elliptical at base, outer layer thick, black, seated in the inner bark 

 and raising the epidermis into pustules. Perithecia rather deeply 

 buried in the stroma, small, \-\ mm. diam., contracted above into 

 moderately stout necks with their obtuse, subhemispherical ostiola 

 subcircinate-erumpent in a convex, brown disk (apex of the stroma) 

 which pierces the epidermis, but does not rise much above it. Asci 

 broad-clavate, 120-150 x 19-22 p. (p. sp. 100-110 }x long), 8-spored, 

 stipitate, obscurely paraphysate. Sporidia biseriate, oblong-fusoid. 

 slightly curved, 3-7- (mostly 5-) septate, hyaline at first, finally brown, 

 45-75 x 10-12 /i, subacute at first, finally subobtuse. 



On dead branches of Quercus tinctoria, Q. ilicifolia and Q. alba. 

 Xcwfield, N. J., on oak limbs, Canada (Dearness). 



Perithecia on the first two mentioned hosts, 3-5 in a struma : on 

 Q. alba, 3-12. The conidial stage is a Coryneum, forming black, 

 erumpent tubercles about f-1 mm. diam. Conidia clavate-fusoid, 

 3-7-septate, 50-80 x 10-13 ju, on densely fasciculate, stout, brownish, 

 septulate basidia 100-120x4-5 p.. 



Ps. Texensis, (E. & E.) 



Diatrype Texensis, E). & K. Journ. Mycol. II, p. 40. 

 Thyridaria Texensis, Sacc. Syll. 7058. 



Stroma pulvinate, subcarbonaceous, black, suborbicular, 2-4 mm. 

 across, at length plane or subconcave above, seated on the surface of 

 the inner bark and bursting through the epidermis which closely sur- 

 rounds it. Perithecia coriaceous, with thick walls, globose or sub- 

 angular by pressure, 6-20 in each stroma, \-\ mm. diam. Ostiola 

 subtuberculiform or hemispherical, with a rather large, though indis- 

 tinct opening. Asci clavate-cylindrical, about 75 x 1 2 /z, with abundant 

 paraphyses. Sporidia partly biseriate, yellowish-brown and uniseptate 



