407 



Perithecia mostly thickly scattered, gregarious, or occasionally 

 standing singly, permanently covered by the slightly raised epidermic 

 depressed-globose, mostly concentrically furrowed or zoned, and um- 

 bilicate. the apex reddish, perforated and slightly ernmpent. Ostiolnm 

 tolerably lar^o. black, surrounded by a black, crustaceous mass. Asci 

 cylindrical, attenuate-stipitate below, obtuse above, 8-sporecb par- 

 aphysate, 150-170x10-12 11. Sporidia uniseriate. oblong, slightly 

 attenuated and rounded at the ends, mostly 3-septate, constricted at 

 the H-pta. brown, generally with one or two of the inner cells divided 

 by a longitudinal septum. 18-27x7-9 u. 



On Rhamnusfranyula, in Sweden, Germany. England and Italv. 



We lind no record of this species having been met with in this 

 country, and when the drawing on plate 30 was made, we were not 

 aware that any species of Pleomassaria had been found here, but had 

 the sporidium (from specc. in Krieger's Funiri Saxonici) figured to 

 illustrate that genus. Since then, PL s<i><ir!<i and PI. Carpini have 

 been found in Iowa and New York, and the diagnosis of PL rhodox- 

 foiiKi has been added in anticipation of that species also being yet 

 found in America. The genus Ejccrstenula, Sacc.. distinguished from 

 PJf'fH/Htxxf/fHf only by the absence of any gelatinous envelope around 

 the sporidia. can hardly be worthy of generic distinction. 



PI. siparia. (B. & Br.) 



Sphifiia sif>aria, B. & Br. Not. Brit. Fungi No. 625. 

 J filial ia siparia, Ces. & De Not. Schema, p. 43. 

 Pleomassaria siparia, Sacc. Sj'll. 3708. 

 Exsicc. Fck!. F. Rh. 2011, Rab. F. E. 260. 



Perithecia scattered or often er crowded and snbconnate, attached 

 to the inner bark and covered by the pustuliform-elevated epidermis. 

 depressed-spherical, J-J mm. diam. (exceptionally 1 mm.), black, the 

 minute ostiolum piercing the epidermis, finally umbilicate. Asci cla- 

 vate. very large, attenuate-stipitate, (190-210x38-44 <j. Winter). 

 8-spored. paraphyses very long and filiform. Sporidia elliptic-oblong, 

 gradually and only slightly narrowed towards each end, obtuse, 7-8- 

 septate and constricted at the septa, the middle cells divided by a 

 longitudinal septum, golden-brown, 56-65 x 15-17 //, with a gelatin- 

 ous envelope. 



On birch. Decorah, Iowa (Holway). 



The Iowa specc. were immature, the sporidia being still hyaline. 

 35-85 x 5 C) // (mostly 40-60 x 5-6 /*), vermiform-cylindrical, 5-6-nu- 

 cleate and granular. 



PL Carpini, (Fckl.) 



Massaria Carpini, Fckl. Symb. p. 153, tab. VI, fig. 35. 

 Pleomassaria Carpini, Sacc. Syll. 3710. 

 Exsicc. M. March. 1928. Krieg. F. Sax. 234. 



