249 

 0. hypoxyloides, (E. & E.) (Plate 26) 



Amphispheeria Hypoxylon, E. & E. Journ. Mycol. II, p. 41. 



Perithecia minute (80-90 //), ovate-globose, white inside, rough 

 and black outside, mostly radiate-sulcate around the ostiolum, which is 

 not prominent and finally rather broadly perforated, densely crowded 

 and partly sunk in a flat, blackish-brown, subcarbonaceous stroma. 

 \-\ cm. across or, by confluence, more, much resembling the sterile 

 stroma of some Hypoxylon. Asci clavate-cylindrical, 55-60 x 10-12 /jl, 

 with abundant paraphyses. Sporidia obliquely uniseriate, ovate, uni- 

 septate, brown, 6-9 x3|-4J //. 



On rotten wood, Louisiana (Langlois), Delaware (Commons). 



0. Symphoricarpi, (E. & E.) 







Plowrightia Symphoricarpi, E. & E. Proc. Acad. Nat Sci. Phil. July 1890, p. 249. 

 Exsicc. EH. & Evrht. N. A. F. 2d Ser. 2374. 



Stroma convex, penetrating to the wood, but not limited by any 

 black circumscribing line, brownish-black, whitish within, l|-2 mm. 

 diam. Perithecia 10-15 in a stroma, \ mm. diam., the upper part 

 mostly prominent and free. Sometimes the stroma is wanting, the 

 perithecia being then simply cespitose or subsolitary. Ostiola obtusely 

 conical, nearly smooth or indistinctly radiate-sulcate. Asci clavate- 

 cylindrical, subsessile, 75-80x12//, with paraphyses. Sporidia uni- 

 seriate or subbiseriate above, ovate-elliptical, uniseptate and con- 

 stricted, hyaline and granular at first, becoming yellow-brown, 15- 

 18x10//. 



On dead branches of Symphoricarpus occidentalis, Sand Coulee, 

 Cascade Co., Montana (Anderson, No. 210). 



0. Aceris, Winter, Hedw. 1871, p. 162. 



Perithecia cespitose, depressed-globose, brownish-black, papillate, 

 thin, | mm. diam., seated on the surface of the inner bark in groups of 

 3-10, soon erumpent through the ruptured epidermis, and then almost 

 superficial. Asci cylindrical, sessile, paraphysate, 180-200x35 //. 

 Sporidia overlapping-uniseriate or biseriate, oblong, uniseptate and 

 constricted at the septum, hyaline, with a broad, hyaline envelope, 

 becoming brown, 50-60 x 1 5-18 //, each cell with a large nucleus. 



On bark of dead maple limbs, Lyndonville, N. Y. (Fairman). 



The sporidia exceed the measurements given by Winter, but 

 otherwise the specimens agree with his diagnosis. The specc. in 

 Roum. F. G. 5636, are only Diplodia, 

 32 



