

115 



branaceous, papillate. Asci 8-spored. Sporidia. when ruaturo. pluri- 

 septate-murifbnn. hyaline. 



P. Berolinensis, Saee. Midi. I. p. 123. (Plate 12) 



Nectria Ribis* Niessl, fnon Tode). 



Pleonectria Ribi*, Karst, Symb. Mycol. Feuii. VI, p. 42. 

 Exsicc. Ell. N. A. F. 470. 



Perithecia erumpent-superficial, cespitose, globose-depressed, J-J 

 nun. diam., finally collapsing to cup-shaped, of a brick-red color and 

 loosely-cellular structure. Ostiolum not prominent. Asci cylindrical, 

 subsessile, 90-1 15 x 10-14 //, subtruncate above. Sporidia uniseriate? 

 oblong-elliptical, obtuse at each end. 5-7-septate and mnriforni. not 

 constricted, minutely guttulate. hyaline. 1622 x 7-8 //. 



On dead stems of lithe*. Canada and the northern United State- 

 west to Montana. 



Sec. Dr. Farlow No. <>140, collected in Canada by Poe and 

 marked in the Curtis collection Nedr'ni f v nest rat* i. B. & C.. but in 

 Grev. IV, p. 46, referred to Sphcarostilbe pseudotrichia, (Schw. ) and 

 evidently the same as Kll. N. A. F. 470. is different from authentic 



*, 



specimens of Sphcsria pseudotrichia, Sclav, (from Surinam), which, 

 besides its peculiar shape*' conidia. has the asmspores larger, about 

 38 //, with a crenulated outline. 



P. denigrata. Winter, Bull. TUT. Bot. Club X, p. 48. 



Exsicc. Rabh. Winter Fungi 2948. Ell. and Evrht. N. A. F. 1334, 2372. 



Perithecia erumpent-superficial, forming dense, pulvinate-hemis- 

 })herical tufts 3-5 mm. diam., seated on a pulvinate stroma which is of 

 a dirty yellow within, nearly globose, gray outside, becoming black. 

 360-470 IJL diam., at length depressed and umbilicate at the vertex. 

 Ostiolum black, papilliform. Asci cylindrical, briefly stipitate, S-spored, 

 about 70 x 8-10 a (elongated finally in water to 110 //). Sporidia 

 generally monostichous. varialile in shape, rounded-subaiigular, 3-5- 

 septate and muriform. more or less constricted at the septa, pale yel- 

 lowish, 10-16 x 7-10 ft. Paraphyses filiform, very long. 



On dead branches of Gleditschia triacanthus, Kentucky (Keller- 

 man), Ohio (Morgan), Delaware (Commons), Missouri (Webber). 



P. Missouriensis, (E. & E.) 



^-'fctria .\fissouriensis, E, & E. Journ. Mycol. IV, p. 57. 



Perithecia cespitose, erumpent-superficial (6-20), globose, J J 

 mm. diam.. seated on an inconspicuous stroinatic base, dark red. 

 sprinkled with small yellowish granules. Ostiolum papilliform and 

 distinct. Asci clavate-oblono-. 100-1 -20 x 15-20 u. n. sp. 75-85 n\. 



' A J, ./ 



