197 



Louisiann (Langloip, 2283), has the perithecia deiiselj' gregarious and 

 emergent-superficial, tlic Iiairs around the base tow-colored and finally 

 disappearing. 



Rh. tinctum. (E. & E.) 



Ceratosloma tinctum, E. & B. Bull. Wash. Coll. vol. I, p. 5. 

 Rhyncostoma tinctum, Sacc. Syll. 6620. 



Perithecia erumpent-superficial, ovate-globose, 165-250 // diam,, 

 roughened with projecting points. Ostiolum filiform, |-| 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 parapliyses. Sporidia biseriate, oblong-elliptical, sub- 

 acute, uniseptate, 6-7 x2|-3 //, brown. 



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

 (Suksdorf). 



Closely allied to Rh. mimitum, Karst, 



Rh. altipetnm. (Pk.) 



Sphatria allipeta, Pk. Bot. Gaz. vol. V, p. 36. 

 Rhyncostoma altipetum, Sacc. Syll. 2769. 



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

 subconical or cylindrical, nearly as long as the perithecia. Asci 

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

 at one end, uniseptate near the other. 



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



The perithecia 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. sphserincola, (Schw.) 



Spharia spharincola. Schw. Syn. N. Am. No. 1611. 



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

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

 longer than the ovate perithecia. 



On decaying Nuwmularia BulUardi, Carolina. Very rare 

 quite diffei-cnt (sec. Schweinitz) from Melanospora lagenaria. 



CERATOSPHJIRIA, Niessl. 



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



Perithecia scniiimmersed or superficial, coriaceous or subcarbona- ' 



