431 



Perithecia small, about \ fx diam., buried in the inner bark in sub- 

 circinate groups of 8-12, covered above by a thin, black crust lying- 

 just beneath the epidermis. Ostiola slightly convergent, rising sepa- 

 rately through the overlying crust and raising and rupturing the 

 epidermis, short-cylindrical, subcompressed or otherwise irregular. 

 Asci clavate-cylindrical, subsessile, aparaphysate, 8-spored, 50-60 x 

 6-7 fx. Sporidia biseriate, biconical, or acutely elliptical, uniseptate 

 and constricted, subobtuse, hyaline, 12-14x4 /i. 



On bark of Acer rubrum, Newfield, N. J. 



The groups of perithecia almost entirely fill the bark for a foot or 

 more in length and surround the limb, but the bark does not seem 

 to be in any way discolored, nor is there any circumscribing line, but 

 the surface is roughened by the ruptured epidermis around the slightly 

 projecting ostiola. 



D. Eucalypti, Hark. New Cal. Fungi, p. 44. 



" Perithecia aggregated in valsiform groups bordered by a raised 

 black line. Ostiola 1 mm. or more long, lax, somewhat agglutinated. 

 Asci oblong-fusoid, 33 x 7 /jl. Sporidia fusiform, slightly curved, 

 hyaline, uniseptate, 4-nucleate, acuminate, 15 x 4 //." 



On dead leaves of Eucalyptus globulus, San Francisco, Cala. 



D. Columbiensis, E. & E. Proc. Acad. Nat. Sci. Phil. July, 1890, 

 p. 233. 



Perithecia in subcircinate clusters of 3-6 (occasionally only one), 

 buried in the inner bark, their bases penetrating to the subjacent 

 wood, large (f-1 mm.), collapsing below, abruptly contracted above 

 into short necks terminating in subtubercular, quadrisulcate-cleft 

 ostiola, erumpent (but not strongly prominent) through the thin, 

 black, superficial, convex crust that covers the stroma. The substance 

 of the stroma consists entirely (except the black, circumscribing layer) 

 of the bleached substance of the bark. Stroma elliptical, 2-5 mm. 

 diam., with a distinct, black, circumscribing line, which does not pene- 

 trate deeply into the wood. Asci oblong-lanceolate, about 100 x 12 jm. 

 Sporidia biseriate, hyaline, oblong, 20-22 x 7-8 /i, uniseptate and con- 

 stricted, each cell with a large nucleus. 



On dead limbs of some undetermined tree, British Columbia 

 (Macoun). 



D. ocularia, (C. & E.) 



Valsa ocularia, C. & TS,. Grev. VI, p. n. 

 Diaporthe ocularia, Sacc. Syll. 23S9. 



