197 



Louisiana (Langlois, 2283), has the peritheeia densely gregarious and 

 emergent-superficial, the hairs around the base tow-colored and finally 

 disappearing. 



Rh. tinctnm. (E. & E.) 



Ceratostoma tinctum, E. & F,. Bull. Wash. Coll. vol. I, p. 5. 

 Rhyncostoma tinctum, Sacc. Syll. 6620. 



Peritheeia eruinpent-superficial, ovate-globose, 165-250 fi diam, 

 roughened with projecting points. Ostiolum filiform, -j mm. long, 

 nearly smooth, sometimes a little swollen just below the apex, which 

 is often crowned with a globule of ejected sporidia half as large as the 

 perithecium itself. Asci subcylindrical, about 30 x 7 //, subsessile, 

 with filiform paraphyses. Sporidia biseriate, oblong-elliptical, sub- 

 acute, uniseptate, 6-7 x 2 j 3 /i, brown. 



On dead wood of Acer, macrophylhim, Klikitat Co., Washington 

 (Suksdorf). 



Closely allied to Rh. mrmttum, Karst. 



Rh. altipetmn, (Pk.) 



Sphczria a/tipeta, Pk. Bot. Gaz. vol. V, p. 36. 

 Rhyncostoma altipetum, Sacc. Syll. 2769. 



Peritheeia minute, subglobose, black, immersed. Ostiola emergent, 

 subcorneal or cylindrical, nearly as long as the peritheeia. Asci 

 cylindrical. Sporidia uniseriate, oblong, colored, 16-17 x5 //, hyaline 

 at one end, uniseptate near the other. 



On decaying wood, Mt. Washington, N. Y. 



The peritheeia sometimes occur in long lines. When young, the 

 sporidia are colorless, but they soon become colored, except at one 

 end, and contain two nuclei. Finally a septum is formed near the 

 colored end of the sporidium. 



Rh. spharincola, (Schw.) 



Sphcevia splicerincnla., Schw. Syn. N. Am. No. 1611. 



Peritheeia densely gregarious, rather soft, erect, dark brown, 

 very rough. Ostiolum of medium length, rigid, oblique, only a little 

 longer than the ovate peritheeia. 



On decaying Nummmlaria Bnlliardi, Carolina. Ycvy rare 

 quite different (sec. Schweinitz)'from Melanospora iagenaria. 



CERATOSPH^RIA, Niessl. 



Not. Pyr. p. 43, (emended). 



Peritheeia semiimmersed or superficial, coriaceous or subcarbona- 



