658 



base, rather small, 2-4 mm. broad and thick, bullate, densely grega^ 

 rious and often confluent, assuming various shapes from mutual pres- 

 sure; when standing singly, regular, convex, covered with a smooth, 

 hard stratum. Perithecia bui-ied, ovate. 



On oak branches ; rare, Bethlehem, Pa. (Schw.). 



BOLINIA, Nitschke. 



Pyfen. Germ. p. 26 (as a subg'enus). 



Stroma superficial, effused. Perithecia deeply immersed in the 

 stroma, with elongated necks and unibilicate ostiola. Asci cylindrical, 

 8-spored, paraphysate. riporidia ovoid continuous, brown. 



B. Tubiilina, (Alb. & Schw.) 



Spharia Tuiulina, A. & S. Consp. Nisk. p. 6, tab. IV, flg. 4, 

 Hypoxylon Tubulina, Fr. Sunima Veg. Sc. p. 383. 

 Bolinia Tubulina^ Sacc. Syll. 1332 Cke. Syn. 807. 



Stroma effused, determinate, oblong or oval, superficially adnate, 

 when on wood still sound and hard, but with the base more or less 

 immersed where the wood is more decayed and softer, surface un- 

 even, with variously-shaped depressions and prominences, or in the 

 smaller stromata, flat pulvinate and smooth, at first of a dirty-ferrugi- 

 nous color, finally black, fragile, margin repand. Perithecia very 

 large, monostichous, densely crowded, ovate or angnlar from mutual 

 pressure, gradually attenuated into long necks, with the perforated 

 ostiola not prominent, and giving the surface of the stroma a porous 

 appearance. Asci cylindrical, long-pedicellate, 8-spored, p. sp. 36-45 

 x5/7. Sporidia obliquely monostichous, small (6-7x3-4//), ovate, 

 ends obtusely rounded, becoming nearly black. 



On dead Juglans, Carolina and Pennsylvania (Schw.). 



The stroma is 2-4 inches or more long, 1^-2 inches or more 

 ^vide, and {-{ an inch thick, with the sides abrupt. When old and 

 broken down, it resembles a Tubulina, lience the specific name. 



PORONIA, Willdenow. 



Flor. Berol. Prodf. p. 400. 



Stroma carnose-suberose, at first clavate, then cup-shaped or dis- 

 coid, stipitate or subsessile, light-colored. Perithecia immersed in the 

 apper, discoid surface of the stroma, carbonaceous, black. Asci cylin- 

 irical, 8 spored. Sporidia ellipsoid, brown, with a hyaline, gelatinous 

 snvelope. Stroma at first clothed with the conidial hymenium, 

 Fimicolous. 



