415 



Peritliecia scattered, enclosed in a rather large, woody, elliptical, 

 gray or blackish, nearly superficial tubercle, umbilicate-perforated 

 above, coriaceous, thick-walled, ovoid or subsphasroid, rather less than 

 1 mm. diam. Asci cylindrical, subsessile, 100-110x12 [i, 8-spored, 

 paraphysate. Sporidia uniseriate, elliptical, yellowish or greenish- 

 brown, 3-5-septate, with a more or less perfect longitudinal septum, 

 14-20 X 8-9 p.. 



On decorticated wood of Thuja, Vermont (Pringle), on Junip- 

 erus Virginianus, Iowa (Holway), on Rhus, Carolina and Pennsyl- 

 vania (Schweinitz), on bleached wood, Texas (Wright), on wood. 

 Mountains of New York (sporidia 25 /i long, Berk, in Grev. IV. p. 

 146). 



Th. antiquum, (E. & E.) 



Sphxzria (Thyridium) antiqua, E. & E. Bull. Torr. Bot. Club, X, p. 90. 

 Thyridium antiquum^ Sacc. Syll. 7123, Cke. Syn. 3987. 



Perithecia gregarious, globose, about \ mm. diam., buried in the 

 substance of tlie bark, which is blackened above them, and raised into 

 little pustules. Ostiola papilliform, at length perforated. Asci cylin- 

 drical, 75-80 X 10 11. Paraphyses filiform, abundant. Sporidia uni- 

 seriate, oblong-elliptical, at length 3-septate, and submuriform, 17- 

 19x7 n, brown. 



On the inner surface of loose, hanging bark of grape vines, New- 

 field, N. J. 



Sometimes as in T. Oarrym, 2-3 perithecia are covered by the 

 same shield which may be entirely shaved away without cutting the 

 subjacent perithecia. 



Th. Garryse, (Cke. & Hark.) 



Sphcaria (Thyridium) Garrycs, Cke. & Hark. Grev. XIII, p. 20. 

 Thyridiutn Garrya, Sacc. Syll. 7122, Cke. Syn. 3985. 



Gregarious or scattered. Perithecia immersed, subglobose, black, 

 i mm. diam., covered above by the black, prominent, convex stromatic 

 shield which is perforated by the tube of the papilliform ostiolum. 

 Asci cylindrical, 4-8-spored. Sporidia elliptical, 7-septate and muri- 

 form, hyaline, becoming yellow-brown, 40-45x15-18 ,«. Epispore 



thick, hyaline. 



On bleached, decorticated twigs of Oarrya, California (Harkness). 



Our specc. of this species from Harkness are old and without 

 fruit. The general appearance is the same as that of Th. antiquum. 

 Occasionally two perithecia are covered by the same shield. 



