577 

 ANTHliSTOMA, Nltschke. 



Pyr. Germ. p. no. 



Stroma more or less effused (diatrypoid), or pulvinate, conical or 

 hemispherical (valsoid), often only partially developed. Perithecia 

 sunk in the stroma or in the matrix, mostly with elongated necks 

 which, in the pulvinate stroma, generally converge and are erumpent 

 together as in Valsa. Asci cylindrical or clavate, with paraphyses 

 more or less distinct. Sporidia oblong or elliptical, continuous, brown. 

 * Stroma effused JEiianthostoma). 



A. melaiiotes, (B. & Br.) 



Sphizria jnelanoies, B. & Br. Brit. Fungi, No. 634, tab. g, fig. 6. 

 Antkostoma meluTiotes, Sacc. Mich. I, p. 326. 



Stroma effused, entirely immersed in the wood, which is blackened 

 on the surface forming elongated spots often confluent; finally blacken- 

 ing the wood moi'e deeply, and with a black, circumscribing line. Peri- 

 thecia small, depressed-globose, entirely buried in the wood, monos- 

 tichous, loosely scattered. Ostiola exserted, minute, entire, conical or 

 hemispherical, shining, at length perforated. Asci cylindrical, short- 

 stipitate, 8-spored, paraphysate, 70x7 fi. Sporidia obliquely uniseriate, 

 obtusely-fusiform, straight or rarely subinequilateral, becoming dark 

 brown, 12-14 x 6-6 /i. 



On decorticated oak limbs, Newfield, N J. 



A. grandinea, (B. & Rav.) 



Diatrype grandinea^ B. & Rav. Grev, IV, p. 95. 

 Antkostoma grandinea^ Sacc. Syll. 1114. 

 Ca-marops grandinea, Cke. Syn. 1469. 

 Exsicc. FIl. N. A. F. 494.— Rav. Car. IV, 90. 



Stroma effused, thin, crustaceous, overspreading the surface of the 

 inner bark, and throwing off the epidermis for 6 inches or more in ex- 

 tent, brownish at first with a rufous tint, finally darker, less than |, mm. 

 thick and easily overlooked, being of about the same color as the bark, 

 surface minutely papillose-roughened by the slightly prominent, sub- 

 hemispherical or obtusely-conical ostiola. Perithecia covered above 

 bv the stroma, small, less than \ mm. diam., depressed-globose, thin- 

 walled, white inside, narrowed directly into the ostiola, which are 

 sometimes faintly I'adiate sulcate. Asci clavate, 50-60x 10 /^ (p. sp. 

 40 X 10 //), short-stipitate, with impeifectly developed paraphyses. 

 Sporidia subbiserinte above, short elliptical or subglobose, 7-10 x 

 5_8 «, becoming nearly black, 1-2-nucleate, but not septate. 



On bark of dead Quercus coccinea, Carolina and New Jersey. 

 73 



