248 The North American Cup-Fungi 



diameter of 2-3 cm., light-colored and rugose underneath; 

 hymenium even or slightly undulated, the color varying from 

 brown to blackish ; stem slender, of nearly uniform diameter 

 throughout its entire length or very slightly enlarged at the 

 base, deeply fluted throughout its entire length, dark, the color 

 similar to that of the hymenium, reaching a length of 4-5 cm. 

 and a diameter of 5-6 mm. at the base; asci cylindric or sub- 

 cylindric, reaching a length of 200 yu and a diameter of 16 m; 

 spores ellipsoid, containing one large oil-drop which often breaks 

 up in dried specimens, about 9 X 18 m; paraphyses enlarged at 

 their apices, where they reach a diameter of 6-8 /j.. 



Among mosses and liverworts in swamp. 



Type locality: Manilius Center, New York. 



Distribution: New York; also in Europe .-^ 



Illustrations: Ann. Rep. N. Y. State Mus. 33: pi. 2, f. 

 16-18; ? Schaeff. Fung. Bavar. pi. 322; Cooke, Mycographia pi. 

 94, f. 341. 



Little is known of this species and it is possible that it is 

 only a slender form of Elvela Mitra. 



4. Elvela atra Oed. Fl. Dan. 9:7. 1770. 



Elvela nigricans Pers. Obs. Myc. 1: 72. 1796. 

 ?Leptopodia atra Boud. Hist. Class. Discom. 37. 1907. 



Pileus mitrate or more often saddle-shaped, the margin free 

 from the stem, at least when mature and irregularly lobed, the 

 color underneath smoky-brown, becoming almost black when 

 mature, especially when dry; hymenium nearly even or slightly 

 undulated, entirely black; stem slender, slightly enlarged at the 

 base, entirely smoky-black except the base, which is whitish, 

 slightly pruinose or tomentose, reaching a length of 4-5 cm. 

 and a diameter of 2-3 mm. ; asci cylindric or subcylindric, 

 reaching a length of 230 ix and a diameter of 16 /x; spores 1-seriate, 

 ellipsoid, containing one large oil-drop, about 12 X 20 /x; pa- 

 raphyses strongly enlarged at their apices, where they reach a 

 diameter of 8-10 /x, smoky-brown. 



On the ground, usually in woods. 



Type locality: Europe. 



Distribution: Wisconsin to Montana; also in Europe. 



Illustrations: Fl. Dan. pi. 534; Boud. Ic. Myc. pi. 238; 

 Cooke, Mycographia pi. 43, f. 167; Gill. Champ. Fr. Discom. 

 pi. 7; Krombh. Abbild. pi. 21, f. 18-20; Rab. Krypt.-Fl. 1'^: 1173, 

 J.S. 



