1894.] NATURAL SCIENCES OF PHIIjADEJ.PHIA. 351 



Helotiella papyricola E. & E. 



On old paper lying by the roadside, Ann Arbor, Mich., March, 

 1893 (L. N. Johnson, No. 1,564, partly). Found also at Newfield, 

 N.J. 



Ascomata gregarious, sessile or contracted below into a very short 

 stipe, pale orange, of a .soft waxy consistency, discoid when fresh, 

 and 200-300 " diam., subspherical and nearly closed when dry, out- 

 side, sparingly furfuraceous, margin fringed with short, spreading 

 hairs. Asci oblong, very short-stipitate, obscurely paraphysate, 

 8-spored, 25-30 x 12//, or elongated, 50-60 x 8/'. Sporidia biseri- 

 ate, cylindric-fusoid, hyaline, slightly curved, siibobtuse, 2-4-nucle- 

 ate, becoming uniseptate, but not constricted, 12-15 x 3;/. 



The paper is stained orange-red around the groups of ascomata. 



Helotiella major E. & E. 



On rotten wood, Ann Arbor, Mich., June, 1893 (F. E. Langdon, 

 Comm. L. N. Johnson, No. 12). 



Ascomata gregarious, often subconfluent, sessile, 1-2 mm. diam., 

 dirty orange inside, dirty white outside and sparingly clothed (the 

 whitish margin more densely so) with short, pale, glandular hairs, 

 expanded when mature and fresh, margin incurved when dry, at- 

 tached to the matrix by spreading, white filaments, which also form 

 a thin subiculum when the ascomata are crowded. Asci oblonsf- 

 cylindrical, sessile, paraphysate, 8-spored, 65-70 x 7-8". Sporidia 

 mostly biseriate, oblong-cylindrical, slightly curved, hyaline, unisep- 

 tate, not constricted, 12-16 x 2i-3,'/. 



H. cornida (Ell.) is much smaller and has the sporidia apiculate. 

 H. Niittallii E. & E. , to which this is closely allied, is also smaller, 

 with the ascomata of fibrous structure, and clothed with longer and 

 much more abundant hairs. Occasionally a spore is 3-septate, but 

 the texture of the ascomata is caruose, not waxy or coriaceous as in 

 Dermatelht. 



Helotiella Nuttallii E. & E. 



On rotten wood, Nuttallburg, West Va., March, 1894 (L. W. 

 Nuttall, 397). 



Ascomata gregarious, sessile, flat-hemispherical, l-l mm. diam., 

 cup-shaped when fresh, contracted and subspherical when dry with 

 only a small round apical opening, orange color tljroughout, disk 

 watery orange, outside and fringed margin paler. Substance fibrous, 



