86 The North American Cup-Fungi 



to the apothecium; asci cylindric-clavate, reaching a length of 

 60-70 /i and a diameter of 6-7 ju, 8-spored ; spores elhpsoid, or 

 ovoid, 3-4 X 7-10 ;u; paraphyses filiform, reaching a diameter 

 of 3 /i. 



On fallen catkins of Salix and Populus. 



Type locality: Europe. 



Distribution: New York and Oregon; also in Europe. 



Illustrations: Batsch, Elench. Fung. Cont. 1: pi. 27, f. 148; 

 Boud. Ic. Myc. pi. 496; Gill. Champ. Fr. Discom. pi. 90 J. 1. 



3. Ciboria amentacea (Balbis) Fuckel, Symb. Myc. 311. 1870. 



(Plate 93.) 



Peziza amentacea Balbis, Mem. Acad. Sci. Turin II. 2: 79. 1805. 

 Rutstroemia amentacea Karst. Myc. Fenn. 1: 106, 1871. 

 Hymenoscypha amentacea Phill. Brit. Discom. 120. 1887. 



Apothecia springing from the sclerotium formed in the 

 mummified catkins of the host, gregarious, stipitate, yellowish- 

 brown, shallow cup-shaped, then expanded, reaching a diameter 

 1 cm. or rarely larger; stem variable in length, often reaching a 

 length of 2-4 cm. ; asci cylindric, or subcylindric, reaching a length 

 of 110-120 /i and a diameter of 7-10 ijl, 8-spored; spores 1-seriate, 

 ellipsoid, or subellipsoid, 4-5 X 9 13 /x; paraphyses filiform, 

 1-2 mm. in diameter, slightly enlarged above. 



On catkins of Ahius incana and Salix discolor. 



Type locality: Europe. 



Distribution: New York to Oregon. 



Illustrations: Mycologia 37: 677, /. 11-13; Rab. Krypt.- 

 Fl. 1-^: 750,/. 1-3; Friesia 3: 247,/. 6; 249, f. 7: 250, f. 8. 



4. Ciboria Caucus (Reb.) Fuckel, Symb. Myc. 311. 1870. 



Peziza Caucus Rebentisch, Prodr. FI. Neomarch 386. 1804. 

 Phialea Caucus Gill. Champ. Fr. Discom. 110. 1882. 

 Hymenoscypha Caucus Phill. Brit. Discom. 120. 1887. 



Apothecia stipitate, springing from a mummified sclerotium 

 within the tissues of the host, cup-shaped with margin incurved, 

 finally expanding and becoming saucer-shaped, or subdiscoid, 

 2-8 mm. in diameter, brown; stem 2-8 mm. long, 5 mm. thick; 

 asci cylindric-clavate, reaching a length of 130 /x and a diameter 

 of 9 fx, 8-spored; spores ellipsoid, or subellipsoid, 5-6 X 9-10 ju, 

 hyaline; paraphyses filiform, slightly enlarged above. 



On fallen catkins of Populus tremuloides and Salix. 



Type locality: Europe. 



