653 



H. serpens, (Pers.) 



Spharia serpens, Pers. Syn. p. 20, Obs. Myc. I, p. 18. 

 Sphcen'a Macula, Tode Fuugi Meckl. II, p. 33, fig. 106. 

 Hypoxylon serpens, Fr. Summa Veg. Scand. p. 284, 

 Exsicc. Fckl. F. Rh. 960.— Rav. Fungi Car. IV, 34.— Sydow, M. March, 2241.— (EH. N. A. 

 F. 164) ?— Destn. PI. Crypt. Ed. I, 377. 



Stroma effused, thin, applanate, black, variable in form and siz^, 

 often in narrow, elongated strips 2-3 mm. wide and 3-6 cm. long, but 

 also in small subelliptical or irregular shaped patches 1-2 cm. long by 

 \-\ cm. wide. Perithecia subglobose, crowded, rather large, rounded 

 and prominent above or rarely slightly depressed around the central 

 papilla, then only slightly prominent, and the surface of the stroma 

 not so distinctly roughened. Conidial layer pulverulent, cinereous. 

 Conidia subglobose, minute, acrogenous, on rather long, branching 

 septate sterigmata. Asci cylindrical, long-pedicellate, 75-100 y. long 

 (p. sp.) by 6-8 // wide, with abundant paraphyses. Sporidia obliquely 

 uniseriate, subcylindrical, rounded at the ends, oblong-cylindrical, sub- 

 inequilateral or almost curved, seldom straight, becoming dark, 12- 

 16x5-6/z. 



On decaying wood (seldom on the bark) of various deciduous 

 trees. 



This is called a common and widely diffused species, but as we 

 have some doubt as to whether we properly understand it, we have 

 taken the above description from Nitschke's Pyr. Germ. The speci- 

 mens distributed in N. A. P. under this name are certainly not the 

 typical form, for the perithecia are small, mostly \ mm. or less, and 

 only slightly prominent, and the sporidia are mostly only 8-10 x 3-4 «. 

 The N. A. F. specimens appear to be the same as the H. colUculosum, 

 Schw. in Rav. P. Am. 742, which cannot be distinguished from Sphmria 

 (Hypoxylon) insidens, in Herb. Schw. 



H. insidens, (Schw.) 



Sphcsria insidens, Schw. Syn. Car. No. t22, Fr. S. M. II, p. 422. 

 Fuckelia insidens, (Schw.) Cke. Grev, XII, p. 52. 

 Exsicc. Ell. N. A. F. :64. , 



Stroma innate, effused, nearly round, brown-black, partly sterile, 

 apparently superficial, but the base immersed in the matrix and sur- 

 rounded by a faint circumscribing line. Perithecia more or less 

 prominent, flexuous, subpapillate, half as large as a mustard seed. 

 Asci cylindrical. Sporidia uniseriate, elliptical, pale brown, 8x4 ,«. 



On rotten wood or oftener on bark, Carolina and Pennsylvania 

 (Schw.), on rotten wood and bark of Magnolia glauca, Newfield, N. J. 



Whether the Sphmria insidens, Schw. in litt., which in Fr. 



