120 The North American Cup-Fungi 



variable in length, often reaching 5 mm., usually about .3 mm. 

 thick; asci clavate, reaching a length of 90-100 fx and a diameter 

 of 8-10 ju. 8-spored; spores irregularly 2-seriate, fusoid, or clavate, 

 slightly curved, often spuriously 1-3-septate, 3-4 X 20-28 ju, 

 occasionally with a cilium at one or both ends; paraphyses fili- 

 form, reaching a diameter of 7 ju. 



On herbaceous stems of various kinds. 



Type locality: Europe. 



Distribution: New York to Oregon, and Missouri, probably 

 throughout North America; also in Europe. 



Illustrations: Rab. Krypt.-Fl. V: 771, f. 1-5; Trans. Brit. 

 Myc. Soc. 18: 76-83,/. 1-5; Mycologia 34: 158,/. 1. 



ExsiccATi: Ellis & Ev. Fungi Columb. 2339; Clements, 

 Crypt. Form. Colo. 80. 



5. Helotium salicellum Fries, Summa Veg. Scand. 356. 1849. 

 Peziza salicella Fries, Syst. Myc. 2: 133. 1822. 



Apothecia scattered, springing through the bark of the host, 

 short-stipitate, at first globose, then expanding and becoming 

 shallow cup-shaped, brownish-yellow, reaching a diameter of 2 

 mm.; hymenium slightly concave, or nearly plane, yellowish; 

 stem scarcely exceeding 1 mm. in length and .3 mm. thick; asci 

 clavate, reaching a length of 75-100 ^ and a diameter of 12-25 /x, 

 8-spored; spores fusoid, with the ends acute, straight, or curved, 

 usually containing one or two oil-drops, becoming spuriously 

 1-3-septate, 5-7 X 25-30 m; paraphyses filiform, reaching a 

 diameter of 2 /x. 



On fallen branches of Salix. 



Type locality: Europe. 



Distribution: Oregon; also in Europe. 



This species has been reported from North America by Sac- 

 cardo. No American material was found in the collection at 

 The New York Botanical Garden, except the Oregon specimens. 

 Fuckel regards this as a variety of Helotium virgiiltorum. 



6. Helotium fructigenum (Bull.) Karst. Myc. Fenn. 1: 113. 



1871. 



Peziza fructigena Bull. Hist. Champ. Fr. 236. 1791. 

 Phialea Jriictigena Gill. Champ. Fr. Discom. 99. 1882. 

 Hymenoscypha fructigena Phill. Brit. Discom. 135. 1887. 



Apothecia gregarious, stipitate, at first closed, then opening 

 and expanding, becoming plane or nearly so, reaching a diameter 



