579 



A. susteutum, (Plowr.) 



Sphtzria siistentum, Plowr. Grev. VII, p. 73. 

 Anthostoma sustentum, Sacc. Syll. 1120. 



Perithecia immersed, with their ostiola erumpent between the 

 bleached fibers of the wood. Asci cylindrical, 150x^10-15 fj.. Spo- 

 ridia ovoid, dark brown, becoming black, 20-25 x 10-11 //. 



On bleached limbs of Arctostaphylus, California. 



A. polynesia, (B. & C.) 



Sphczria Polynesia, B. & C. Grev. IV, p. 146. 

 Anthostoma Polynesia, Sacc. Syll. mo. 



' Forming little oblong, black spots which are studded with the 

 ostiola. Asci very slender. Sporidia oblong, brown, 7 // long. 

 On wood, Mountains of Virginia. 



." 



** Stroma valsoid or tuberculiform. 

 A. gastrinnm, (Fr.) 



Sphceria gastrina, Fr. S. M. II, p. 379. 

 Sphceria irregularis, Sow. Eng. Fungi, tab. 374, fig. 9, 

 Hypoxylon gastrinum, Fr. Summa, 383. 

 Melogramma gastrinum, Tul. Sel. Carp. II, p. 89. 

 Quaternaria Nitschkei, Fckl. Symb. p. 230. 

 Anthostoma gastrinum, Sacc. Syll. 1129. 



Exsicc. Fckl. F. Rh. 2005. Rab. F. E. 627. Sacc. M. Ven. 1441. Desm. PI. Cr. Ed. I. 

 1254, Ed. II, 754. 



.Stroma variable ; when seated on the bare wood, superficial or 

 very nearly so, depressed-globose or pulvinate, black, smooth and 

 shining outside, 2-4 mm. broad; when immersed in the bark, and cov- 

 ered by the raised and blackened epidermis, hemispherical or convex, 

 disk erumpent; in either case whitish inside, but enclosed in a distinct. 

 black stratum, which shows as a black, circumscribing line in a hori- 

 zontal section. Perithecia 8-40 crowded in the bottom of the stroma. 

 J-j mm. diam., ovate, with thick, black, coriaceous walls, and stout, 

 cylindrical, elongated necks, which, in the superficial stromata, on wood, 

 rise straight through the stroma, with their obscure, papilliform ostiola 

 erumpent over the whole of the upper surface, but when the stroma is 

 buried in the bark, converging and erumpent in the exposed disk. 

 Asci cylindrical, short-stipitate, 90-120 x 5/^ (p. sp. about 80 //), par- 

 aphysate, 8-spored. Sporidia uhiseriate. oblong or oblong-elliptical, 

 ends rounded and obtuse, straight, dark brown, becoming opake or 

 nearly black, 10-14 x4-4J p (10-14x5-6 p, Winter). 



On bark of dead Ulmus, Canada (Dearness), on oak, Carolina and 

 Georgia (Ravenel). 



