CENANGIUM. 



345 



Name KCVOC, empty, ajyog, a vessel ; from the hollow 

 receptacle. 



ARRANGEMENT OF THE SPECIES. 



A. Sporidia elliptic. 



(a) Sporidia septate 

 (6) Sporidia simple 



B. Sporidia oblong 



c. Sporidia linear-fusiform or filiform 

 D. Sporidia clavate 



KEY TO THE SPECIES. 



species 1 

 2-4 



5 



,, 6,7 

 8,9 



i 



Externally glabrous 



Externally more or less powdery 

 (Hymeuium black, margined, substipitate : on birch 

 IHymenium nearly black, scarcely margined, sub- 

 j stipitate 



jHymenium blackish-brown, margined, sessile 

 |Hymeuiuin pale cinereous; margin fimbriate, con- 

 \. nivent, turbinate 



Hymenium whitish cinereous ; margin lacerated . . 



Hymenium yellowish 



Hymenium brown 



Hymenium black 



(Externally rugose, powder reddish . . 

 ' \Externally even, powder whitish 



A. SPORIDIA ELLIPTIC. 



1 



I 



2 

 sen'atum. 



prunastri. 

 subnitidum. 



Pibis. 



fuUginosum. 



3 



phxosporum. 



Rubi. 



ferruginosnm. 



pulveraceum. 



(a) Sporidia septate. 

 1. Cenangium prunastri. Fries. 



Csespitose, erumpent, substipitate or subcylindrical, 

 united at the base into a common stroma, horny, smooth, 

 blackish ; hymeniurn plane or slightly concave, nearly 

 black, submarginate ; brown within; asci clavate; sporidia 

 8, oblong-elliptic, 1 -septate, 10 13 x 3 4^ ; paraphyses 



filiform, adherent, brown at the summits. 



Pycnidia associated on the same stroma with the 

 above, awl-shaped, blackish, smooth, pierced for half their 

 length with a cylindrical cell, opening at the summit ; 

 stylospores fusiform, acute, curved, uniseptate, 15 x 2/z. 

 (Plate X. fig. 66). 



Cenangium prunastri- -Fries, " Sys. Myco.," ii. p. 180 ; 

 "Eng. Flo.," v. p. 211; Berk., " Outl.," p. 374; Cooke, 

 " Handbk.," No. 2190. Peziza prunastri Grey., " Flo, 



