251 



tufts closely sun-ounded by the tranteversely ruptured epidermis. Spo- 

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

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



On dead alder bz-anches. Center, N. Y., in company with Torula 

 olnea. 



Var. camosa, Cke. Grev. XV, p. 84, has the sporidia 3-septate, 

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

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

 Clusters of closely packed, subconfluent perithecia elliptical, 1-l^x 

 2 mm. diam. Asci cylindrical, 75-80 x 6-7 [i. Sporidia 20-25 x 4 //. 

 Differs from O. Alni, Winter, in its smaller, hyaline sporidia. 



0. staphi^lina, E. & E. (Plate 41) 



Plowrtghtia 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 ji 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 clavate- 

 oblong, hyaline, uniseptate and slightly constricted., 12-15x4^-5 //, 

 ends obtuse. 



On bark of Staphylea trifoUa, London, Canada (Dearness). 



0. seriita, (Pk.) 



Cucurbitaria seriata, Pk. 28th Rep. p. 75. 

 Ottilia 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 subclavate. Sporidia uniseriate or rarely crowded, unisep- 

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

 10-13 y. long. 



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



0. fflorbisa, (Schw.) 



Sphizria morbosa, Schw. Syn. Car. 134, Fr. S. M. II, p. 417, Farlow in Bull. Buss, 



Inst. 1876, p. 449, tab. IV— VI. 

 Plowrightia morbosa, Sacc. Syll. 5295. 

 Fxsicc. Routn. Fungi Sail. 4450. —EU. N. A. F. 691. 



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

 crowded and forming a continuous layer on the surface of elongated 

 swellings 4-8 cm. long and 1-^2 cm. thick, formed from the scarcely 



