250 The North American Cup-Fungi 



hymenium even or more or less undulated, dark brownish-black; 

 stem short, slender, of nearly uniform diameter throughout its 

 entire length, or slightly enlarged at the base, reaching a length 

 of 1.5 cm. and a diameter of 3-4 mm., similar in color to the 

 under side of the pileus; asci cylindric or subcylindric, reaching 

 a length of 300 ix and a diameter of 16 /x; spores 1-seriate, ellipsoid, 

 containing one large oil-drop, 10 X 17-18 /x; paraphyses enlarged 

 above, where they reach a diameter of 8 ix, slightly colored. 



On soil, usually in woods. 



Type locality: Europe. 



Distribution: Idaho; also in Europe. 



Illustration: Sturm, Deutsch. Fl. 3: pi. 57. 



7. Elvela adhaerens Peck, Bull. N. Y. State Mus. 54: 956. 



1902. 



Pileus thin, irregularly refiexed and more or less saddle- 

 shaped, reaching a diameter of 2-3 cm., the margin adhering 

 to the stem, underneath whitish or yellowish; hymenium even or 

 very slightly undulated, whitish to tan, becoming brownish with 

 age; stem slender, reaching a diameter of 5 mm. and a length of 

 6-8 cm., similar in color to the outside of the pileus; asci cylindric 

 or subcylindric, 8-spored; spores ellipsoid, usually containing 

 one large oil-drop, about 12 X 18-20 /x; paraphyses strongly 

 thickened at their apices. 



On the ground in woods. 



Type locality: Bolton, New York. 



Distribution : New York. 



Illustration: Bull. N. Y. State Mus. 54: pi. L,f. 11-14. 



8. Elvela californica Phill. Trans. Linn. Soc. II. 1 : 423. 1880. 



Pileus strongly spreading, reflexed or occasionally irregularly 

 saddle-shaped, reaching a diameter of 10 cm., strongly inflated, 

 the substance very thin and papery when dry; hymenium even 

 or irregularly convoluted, light- to dark-brown; stem stout, 

 reaching a diameter of 3 cm. and a length of 10 cm., deeply and 

 irregularly lacunose, with the ribs extending out on the under 

 side of the pileus like the ribs of an umbrella, the entire stem 

 white or occasionally with a pinkish tint, becoming yellowish 

 with age; asci clavate or subcylindric, reaching a length of 

 200 /x and a diameter of 12 ^t; spores 1-seriate or partially 2- 

 seriate above, narrow-ellipsoid, containing two small oil-drops, 



