251 



tufts closely surrounded by the transversely ruptured epidermis. Spo- 

 ridia uniseriate. uniseptate, subacuminate. constricted at the septum, 

 nearly colorless, with one or two nuclei in each cell, 20-25 p. long. 

 On dead alder branches, Center, N. Y., in company with 



Yar. carnosa, Cke. Grev. XY, p. 84, has the sporidia 3-septate, 

 (Montagnella)? Specimens from Peck (in our Herb.) have the peri- 

 thecia ovate-globose, rough, J-J mm. diam. Ostiolum indistinct. 

 Clusters of closely packed. subconfluent perithecia elliptical, l-l|x 

 2 mm. diam. Asci cylindrical. 75-80 x 6-7 p. Sporidia 20-25 x 4 p. 

 Differs from 0. AlnL Winter, in its smaller, hyaline sporidia. 



0. staphylina, E. & E. (Plate 41) 



Plowrightia staphylina, E- & E- Proc. Acad. Nat. Sci. Phil. July 1890, p. 248. 



Cespitose, clusters of perithecia about 1 mm. diam., mostly seri- 

 ately confluent for several centimeters in length, erumpent through 

 cracks in the bark and only slightly prominent. Perithecia black, 

 small, 150-200 IJL diam., ovate or obovate, narrowed below into a sub- 

 stipitate base. Ostiolum conic-papilliform, soon broadly and some- 

 what irregularly perforated. Asci clavate-cylindrical. subsessile, par- 

 aphysate, 60-65 x 8 //. Sporidia mostly biseriate, oblong or clavatc- 

 obloiio'. hyaline, unisoptate and slightly constricted. 12-15x4-5 //. 

 < i nds obtuse. 



On bark of Stdphi/lwi trifolia, London, Canada (Dearness). 



0. seriata, (Pk.) 



Cucurbitaria seriata, Pk. a8th Rep. p. 75. 

 Otthia seriata, Sacc. Syll. 2801, Cke. Syn. 2487. 



Perithecia cespitose, erumpent in long, flexuous, interrupted lines, 

 small, nearly globose, black, white within, sometimes collapsing, the 

 stroma, if present, merely cortical and subferruginous. Asci cylin- 

 drical or subclavatc. Sporidia uniseriate or rarely crowded, unisep- 

 tate, oblong-elliptical, slightly constricted at the septum, hyaline, 

 10-13 fjL long. 



On dead bark of Euonymus, Albany, N. Y. 



0. morbosa, (Sehw.) 



Sphceria morbosa, Schw. Syn. Car. 134, Fr. S. M. II, p. 417, Farlo\v in Bull. Buss. 



Inst. 1876, p. 449, tab. IV VI. 

 Plo-wrightia morbosa, Sacc. Syll. 5295. 

 Fxsicc. Roum. Fungi Gall. 4450. Ell. N. A. F. 691. 



Perithecia globose. J mm. diam., smooth, black, collapsing, densely 

 crowded. and forming a continuous layer on the surface of elongated 

 swellino's 4-8 cm. Ions' and 1-2 cm. thick, formed from the scarcely 



O < 



