582 



A. cercidicolum, B. & C. 25tli Rep. N. Y. State Mus. p. 101. 



Diatrype cercidicola, B. & C. in Herb. Curtis. 

 Anihosioma cercidicolum, Sacc. Syll. 1136. 



Stroma black, plane, suborbicular, 6-8 mm. diam., thin, seated on 

 the inner bark, surrounded by the ruptured epidermis, dotted by the 

 minute, depressed or umbilicate, at length perforated ostiola. Perithe- 

 cia crowded, elliptical or ovate. Sporidia unequally ovate, colored, 

 10 (I long. 



On bark of unknown wood, Bufi'alo, N. Y. (Clinton). 



The inner surface of the bark is stained black. 



A. microsporum, Karst. Fungi Fenn. 860. 



Phaosperma helvetica, Fckl. Symb. p. 224, tab. VI, fig. 40 (fide Karst.). 

 Diatrype microspora, EU. Bull. Torr. Bot. Club, VIII, p. 74. 

 Anihosioma, Ellisii, Sacc. Syll. I, p. 308. 



Stroma ventricose-hemispherical, swollen, black inside and out, 

 the upper part erumpent, rounded, subviscose when fresh, appearing 

 like a mass of black, exuding gum, 2-6 mm. broad, 2-3 mm. thick, 

 often confluent. Perithecia deeply immersed in the stroma, oblong, 

 leathery, closely packed. Ostiola papillate, only slightly prominent, 

 broadly and irregularly perforated. Asci clavate-cylindrical, stipitate, 

 p. sp. 25-30 X 5 /i, 8-spored, paraphysate. Sporidia obliquely unise- 

 riate, oblong, obtuse, 1-2-nucleate, olive-broAvn, 4r-5 x l|-2 fi. Var. 

 exudaiis, Pk. 40th Rep. p. 67, has the perithecia collected in a thin, 

 crowded, angular, cortical stroma, closely covered by the pustulate- 

 elevated, irregularly ruptured epidermis. Ostiola obscure or concealed 

 beneath the defiled epidermis. Asci very slender, cylindrical, 40 x 4;/. 

 Sporidia minute, oblong, straight, colored, 5 /i long, oozing out and 

 staining the surface of the matrix. 



On dead alders, Maine (Blake), New York (Peck). 



Sec. Karsten ostiola exserted, 1 mm. long, but specc. sent by him 

 have short, obtuse ostiola just like the American specc. 



A. tuberculosum, (Schw.) 



Sphcsria tuberculosa, Schw. Syn. Car. No. 164. 

 Xylosphcp-ria {Anthostoma) tuberculosa, Cke. Syn. 3936. 



Perithecia ovate, immersed, glabrous. Ostiola superficial, very 

 large, oblong-ovate, tuberculose-roughened, scattered or aggregated, 

 large, black but without any black spot, only the sphEeriiform ostiola 

 half as large as the perithecia projecting. 



On decaying birch wood, Carolina, and on Robinia viscosa, in 

 Pennsylvania (Schw.). 



