631 



Stroma erumpent-superficial, solitary or subcoufluent, subglobose, 

 hemispherical or oblong, J-| cm. across, dull purplish-red, becoming 

 black, grayish-black within, roughened by the distinctly prominent, 

 ovate, monostichous, | s | mm. perithecia. Asci (p. sp.) 75-80 x 

 7-8 [1, with abundant paraphyses. Sporidia uniseriate, opake, in- 

 equilaterally-elliptical, 10-12 x4|-5| [i (12-14 x 6-6| [i, Sacc). 



On bark of dead oak, Decorah, Iowa, and on bark of dead plum 

 trees, and (maple)? Vermillion Lake, Minn. (Holway). 



According to Saccardo, the perithecia are larger and more promi- 

 nent than in the typical form, which is described by Nitschke as 

 having the stroma pulvinate, depressed, rarely hemispherical or nearly 

 globose, solitary or connate, with globose, crowded, subdistichous 

 peripherical perithecia, and sporidia 10-12 x 6//. The smaller stro- 

 mata resemble those o\ H.fuscum, from which it is distinguished by 

 its smaller sporidia. From H. multiforme, it is distinguished by its 

 rather larger, darker sporidia. 



H. enteromeluni, (Schw.) 



Sphizria enieromela^ Schw. Journ. Acad. Phila. Vol. V, p. lo, 



' Stromata pulvinate, often longitudinally confluent for six inches 

 in length, rusty-red, surface not granulated, variable in shape, suli- 

 compressed, very black within, covered above with a furfuraceous. 

 pulverulent, rust-colored bark. Immersed in the stroma are a few 

 perithecia of larger, size, the others being minute, peripherical, globose 

 and black. The stroma stains the inner bark black. In the nature of 

 the outer layer of the stroma, this is allied to H. coccineum. Sec. 

 Cooke in Grev. XI, p. 123, the sporidia are 10 x 4 /z. 



Brumpent from cracks in the bark of dead chestnut trees, Beth- 

 lehem, Pa. (Schw). Rather rare. 



H. V^ra Oriicis, Berk. & Cke. Grev. XI, p. 129. 



Subglobose, superficial, often confluent, 1-2 cm. diam., bright 

 rust-color, sooty black within. Perithecia of medium size, ovate, 

 peripherical, somewhat prominent. Asci cylindrical. Sporidia ellip- 

 tical, attenuated at each end, brown, 20x8 /z. 



On rotten wood, Vera Cruz, Mexico (Salle). 



H. qnadratura. (Schw,) 



Sphcsria quadrata, Schw. Syn. N. Am. 1223. 



Stroma round, flattened-pulvinate, reddish-black, 2-3 mm. diam., 

 margin abrupt all round. Peritheqja scarcely prominent. Ostiola 

 papilliform. Sporidia overlapping-uniseriate, brown, continuous, 15- 

 20 X 8-10 fj.. 



