123 



rough. Asci club-shaped, short-stipitate. Sporidia flattened, the broad 

 side elliptical, apiculate, 10-12 x 9-10 //, olive brown; when viewed 

 edgewise, fusiform, 7-8 /jl broad. 



On decaying herbaceous stems common. 



Ch. murorum. Cda. Icon. I. p. 24. tab. VII, tig. 293. B. 



Exsicc. Rab. F. E). 234. 



Perithecia globose, ovate or elliptical, varying in size from 160-280 

 fi high by 160-230 /i broad. Ostiolum short, papilliform, distinct, 

 sometimes collapsing; apical hairs simple, 2-3 times as long as the 

 height of the perithecium, granular-roughened, dark brown, broadly 

 arched with tips incurved; sides of the perithecia more sparingly 

 clothed with finer, subulate hairs brown below and subhyaline above. 

 Asci broad-clavate, short-stemmed, 8-spored. Sporidia narrow-ellipti- 

 cal, scarcely apiculate, olive or chocolate-brown, 12-16 x 7-8 /jl, slightly 

 compressed. 



On bark of dead poplar, Montana (Anderson No. 651). 



Ch. sphaerospermum, C. & E. Grev. VIII, p. 16. 



Perithecia superficial, black, strigose, crowded in elongated groups, 

 and connected by a loose mycelium, ovate globose. Hairs rigid, erect, 

 elongated, slender, smooth, brownish-black, divaricatelv branched above. 

 the main axis prolonged at the point of branching or bifurcation ex- 

 actly as in Ch. pusillum. Sporidia viewed in front nearly round, 

 7-8 fi diam. (10 /x Cke.), viewed edgewise elliptical, 7-8 x3 //. 



On the basswood bottom of a barrel standing in a cellar at New- 

 field, N. J., and found in the same situation by Rev. J. L. Zabriskie, at 

 Flatbush, Long Island. Differs from Ch.pusilhim only in its larger, 

 darker, nearly round sporidia. 



Ch. pusillum, E. & E. Proc. Phil. Acad., July, 1890. (Plate 16) 



Perithecia gregarious, black, membranaceous, ovate, a 1 tout 200 u 

 high by 150 [i thick, the lower part clothed with fine, loosely entan- 

 gled, pale, branching, slate colored hairs, the upper part more sparingly 

 with longer, darker, nearly smooth and simple, partially transparent, 

 continuous or faintly septate hairs, about 4 fi thick at the base and 

 tapering above. Asci narrow-cylindrical, 30 x 3| fi (p. sp.), without 

 paraphvses. Sporidia uniseriate, elliptical, brown, compressed, 3J-5 

 x2|-3| ,, n and 1J-2 fi thick. The asci soon disappear and the spo- 

 ridia are expelled in a cylindrical mass |-| mm. long and carrying along 

 with it the upper part of the perithecium clothed with its spreading 



