Cenangium 301 



Type locality: Colorado. 



Distribution: Colorado and Toronto, Canada. 



The illustration accompanying this description was made 

 from material collected by the writer and Mr. Bethel in 1910. 

 A note in the herbarium of The New York Botanical Garden on 

 a Bethel label 1898 states "this is abundant everywhere in the 

 Mts. where aspen {Populus treniuloides) is found." It was 

 apparently confused b>' Mr. Ellis with Cenangium populneum, 

 although Ellis, himself, described it ten years before under the 

 name indicated above. 



6. Cenangium populneum (Pers.) Rehm in Rab. Krvpt.-Fl. 

 V: 220. 1889. (Plate 131.) 



Peziza populnea Pers. Tent. Disp. Fung. 35. 1797. 



Peziza fascicular is Alb. & Schw. Consp. Fung. 315. 1805. 



Peziza crispa Sow. Engl. Fungi pi. 425. 1814. 



?Cenangiiim popidinum Schw. Trans. Am. Phil. Soc. 11. 4: 239. 1832. 



Dermatea fascicular is Fries, Summa Veg. Scand. 362. 1849. 



Encoelia fascicularis Karst. Myc. Fenn. 1: 217. 1871. 



Cenangium fasciculare Karst. Acta Soc. Fauna Fl. Fenn. 2'^: 145. 1885. 



Encoelia populnea Kirsch. Ann. Myc. 33: 222. 1935. 



Apothecia erumpent through the outer bark in cespitose 

 clusters of six to twelve each, the clusters often 5 mm. or more in 

 diameter, or more rarely solitary, the individual apothecia at 

 first closed, finally opening and usually deep cup-shaped, often 

 much contorted and twisted from mutual pressure, grayish- 

 brown, reaching a diameter of 3-5 mm.; asci narrowly clavate, 

 reaching a length of 75-90 m and a diameter of 8-9 n, 8-spored; 

 spores narrowly ellipsoid, or allantoid, 3-4 X 12-14 n\ paraphy- 

 ses slender, slightly enlarged above, reaching a diameter of 3 fi. 



On dead branches of Populus tremuloides and Populus grandi- 

 dentata; also reported on Fraxinus. 



Type locality: Europe. 



Distribution: Massachusetts to Colorado, Iowa and Kansas; 

 also Europe. 



Illustrations: Alb. & Schw. Consp. Fung. pi. 12, f. 2; Rab. 

 Krypt.-Fl. I'*: 215,/. 2; Bull. Lab. Nat. Hist. State Univ. Iowa j 



S:pl. 25, f. 1; Sow. Engl. Fungi pi. 425 J. 1. 



ExsiccATi: Ellis, N. Am. Fungi 1314; Barth. Fungi Columb. 

 2209; Brenckle, Fungi Dak. 209 (as var. prunicolum Rehm); 

 Reliq. Farlow. 104. /oS^C4>V 



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