142 PROCEEDINGS OF THE ACADEMY OF [1893. 



The spermogonia (Cytispora pruni Ell. and Dearness), contain an 

 abundance of oblong-fusoid sporules, 2-4-nucleate, hyaline, 10-12 x 

 3//. The perithecia appear in the bark, directly beneath the sper- 

 mogonia. 

 Diaporthe calosphaerioides E. <fc E. 



On dead stems of Sambucus, London, Canada. April, 1892. 

 (Dearness, No. 1,744.) 



Stroma cortical, convex, 2-4 mm. diam., raising the bark into 

 brpad pustules, sunk to the wood but not penetrating it or sur- 

 rounded by any black circumscribing line, thin, brownish-black, 

 mostly coming off with the bark. Perithecia 6-12, circinate, thin 

 membranaceous and collapsing when dry, about $ mm. diam., necks 

 slender, decumbent, converging with their broad-papilliform, finally 

 subumbilicate ostiola joined in a flat, brown disk erumpent through 

 the epidermis and closely surrounded by it. Asci fusoid-clavate, p. 

 sp. 50-60 x 8-10/ji, with a fugacious stipe 15-20//.. long, and long, 

 lanceolate but very evanescent paraphyses. Sporidia biseriate, 

 allantoid, hyaline, 3-4-nucleate, rounded at the ends, finally uni- 

 septate, about 15 x 3-3]//. 



This has an outward resemblance to PseudovaUa sambucina Pk., 

 but differs in its sporidia. The long paraphyses and circinate peri- 

 thecia barely covered by the thin stroma indicate a relationship with 

 Calosphceria. 



Diaporthe alienaE. & E. 



On Cratcegus (hawthorn), London, Canada. March, 1892* 

 (Dearness, No. 1,793.) 



Perithecia 4-6 in a pustule, buried in the scarcely altered bark, 

 not sunk in the wood, black, subcom pressed, A-f mm. diam., with 

 short necks and black, obtuse, coarse ostiola erumpent in a brown, 

 convex disk which is soon obliterated. Asci cylindrical, 75-80 x 

 7-8/jl. Sporidia uniseriate, 8 in an ascus, short and obtusely-ellip- 

 tical, hyaline, uniseptate and constricted, with a large nucleus in 

 each cell, 10-13 x 7-8/;.. 



According to the specc. of D. crataegi (Curr.) in Cke. F. Brit, 

 ser. 1st, No. 380, this cannot be that species, which in the specc. 

 cited, has smaller perithecia and smaller asci with biseriate, oblong- 

 fusoid sporidia about 15 x Sh' J -, 4-nucleate, becoming uniseptate. 

 There is some confusion in Currey's figures. The ascus he figures 

 on PI. 48, fig. 135, has uniseriate, elliptical, uniseptate sporidia, 

 while the sporidia figured at 135 (a), are oblong-cylindrical. 



