651 



ridia uniseriate, acutely elliptical or almond-shaped, opake, 25-30 x 

 10-12 //. 



On dead trunks of oak, from New York to Florida. 



According to Schweinitz this species is sometimes interruptedly 

 continuous for 20 feet along the standing trunks of oak {Q. falcata), 

 which are also nearly surrounded by it. 



H. crocop^plnm, B. & C. Grev. IV, p. 49. 



Nearly | inch broad, irregular, depressed, clothed with a dense 

 coat of red ferruginous powder. Perithecia rather prominent, with a 

 minute ostiolum. Sporidia dark, shortly cymbiform, 13-14x8 /z, (sec. 

 Cooke, 1. c). 



On decayed bark, South Carolina (Ravenel). 



H. florideum, B. & C. Grev. IV^ p. 50. 



Effused for many inches, undulate, wine-colored, pulverulent. 

 Perithecia hidden. Sporidia cymbiform, uninucleate, 9-10 x 3J //. 

 Asci linear. 



On Acer rubrum, Carolina (Ravenel). 



** Externally black. 



H. stigmdteum, Cke. Grev. VII, p. 4. 



Exsicc. Rav. F. Am. 649. 



Effused, black, crustaceous, thin (1-1^ mm.), papillose from the 

 prominent ostiola, 3-5 or more cm. broad, originating beneath the 

 cuticle of the bark which it throws off in the same manner as Nummu- 

 laria Bulliardi, Tul., which it much resembles. Asci linear cylin- 

 drical. Sporidia uniseriate, elliptical, with the ends subacute, some- 

 times navicular, dark, 28x8 /^ (sec. Cke.); 20-23x10-12// in the 

 Louisiana specc; 20-25 x 10-12 // in the F. Am. specc. 



On an old log, Louisiana (Langlois), on fallen logs. South Carolina 

 (Ravenel), on bark of dead oak, California (Harkness), on beech bark, 

 Ohio (Morgan). 



H. epirrhodium, B. & Rav. Grev. IV, p. 51. 



Effused, thin, forming small black patches about two lines across, 

 papillose from the slightly prominent ostiola. Asci linear. Sporidia 

 uniseriate, elliptical. Sporidia sec. Cke. 1. c. 9 x 3| [i. 



On branches of rose. South Carolina (Ravenel). 



fl. effiisum, Nitschke, Pyr. Germ. p. 48. 



Exsicc. Ell. & Evrht. N. A. F. 2d Ser. 2114.— Sacc. M. Veneta, 1470. 



Stroma superficial, thin, forming black, crust-like patches of 



