262 NATURAL HISTORY BULLETIN. 



Sessile crowded, yellowish, slightly concave, then nearly 

 plane, becoming dingy orange brown, 3 to 8 mm. in diameter, 

 externally clothed with delicate flexuose, septate, black or 

 brown hairs; asci cylindrical; long; sporidia eight, elliptic, 1- 

 to 2-guttulate, 17 to 20 by 7 to 8 microns; paraphyses slender, 

 slightly enlarged at their apices. 



Habitat — On and surrounding an old burnt stump, in open 



woods; fall Iowa City. 



The plants are very abundant on burnt wood and the sur- 

 rounding soil. When mature they are of a dark brownish 

 color and clothed on the outside of the cup with dark, reddish 

 brown hairs which are not errect but adpressed, forming dark 

 lines which extend from near the base toward the margin of 

 the cup. Fresh plants grown in the laboratory are at first 

 yellowish, becoming brown with age. At maturity the mar- 

 gin is generally elevated leaving the hymenium slightly con- 

 cave. 



Genus III— N EOTIELLA Cooke. 



Receptacle sessile or stipitate, externally clothed with hya- 

 line hairs. Asci 8-spored; spores ellipitial or fusiform, hya- 

 line, smooth, or verrucose, with or without guttulrc. Plants 

 found on earth or wood. 



One species has been collected near Iowa City on damp soil. 



N EOTIELLA LUTEO-PALLENS {Nyl.) Sacc. 



Plate V, fig. 11. 



1889 Nebtiella luleo-palens Saccardo, Sylloge Fung. VIII, p. 191. 



Cups sessile, at first hemispherical, then expanded, pale 

 orange yellow, 4 to 5 mm. in diameter, externally clothed with 

 light colored septate, rather rigid hairs; asci cylindrical, 

 operculate; sporidia elliptic, 15 to 17 by 9 to 10 microns gran- 

 ular within; paraphyses stout thickened at their apices, filled 

 with large pale yellow granules, 5 to 7 microns in diameter. 



Habitat — On naked soil in woods; also grown in laboratory 

 from same soil. 



