1893.] NATURAL SCIENCES OF PHILADELPHIA. 443 



H. viridens B. and C. seems to differ in its hidden ostiola 

 (ostiolis latitantihus). 



Nectria bicolor E. and E. 



On dead twigs of Carya, Wilmington, Del., Sept. 1893. (Com. 

 mons, No. 2245). 



Gregarious, perithecia ovate, slightly contracted at base, reddish- 

 flesh-color, 250-300// diam., clothed, except a small space around 

 the conic- papilliform, darker colored ostiolum, with clavate, 1-2 sep- 

 tate hairs hyaline and 3-4// thick at base, yellow and granular- 

 roughened, and 5-7// thick at the rounded, obtuse, oblique apex. 

 Asci clavate-cylindrical, p. sp. 35-40x6-7//, pseudo paraphysate, 

 8-spored, short stipitate. Sporidia biseriate, oblong, straight, hya- 

 line, subobtuse, 7-11 x 2 J— 3?//, 2-3 nucleate, continuous at first, 

 finally faintly uniseptate and slightly constricted. 



The yellow color of the hairy coat is the same as in N. sulphured 

 Ell. and Calk, but there is no subiculum, and in that species the 

 perithecia are not hairy, but simply pruinose. Fusarium epispJtceri- 

 cum C. and E. (Grev. V. p. 50) appears to be the conidial stage. 



Lasiosphaeria striata E. and E. 



On dead willow limbs near Park Hill, Out, Canada, May, 1893. 

 (Dearness, No. 2177). 



Perithecia gregarious, subglobose, 1-1 mm. diam., fibrose-mem- 

 branaceous, pale reddish- brown, thin and collapsed above, fibrose- 



striate, seated on a thin, dark colored, crustaceo-tomentose subiculum 

 extending along and blackening the limb for several centimeters. 

 Asci clavate-cylindrical. short- stipitate, 100-110x7-8//, 8-spored 

 with filiform paraphyses. Sporidia crowded-biseriate, fusoid, hyaline, 

 acute, 3-5 septate, 40-60 x 2h -3//. 



The young perithecia are filled with stylospores 20-27x3//, 3 

 septate, hyaline. 



Acanthostigma parasiticum E. & E. 



Parasitic on Diatrype stigma, Newfield, N. J., November, 1892. 



Perithecia scattered, ovate, superficial, small (100-112// high), 

 clothed with stout, straight, rigid, spreading bristles 50-75 x 5// ; 

 ostiolum papilliform. Asci oblong, 55-70 x 12-15//, slightly over- 

 topped by the abundant paraphyses. Sporidia fasciculate, fusoid, 

 multi-(6-12) septate, slightly curved, thickened above, yellowish- 



