CENANGIUM. 



345 



species 1 



2-4 



5 



6,7 



8,9 



»5 

 11 



Name — ksvoq, empty, ayyog, a vessel ; from the hollow 

 receptacle. 



Arrangement op the Species. 



a. Sporidia elliptic. 



(a) Sporidia septate 



(b) Sporidia simple 



b. Sporidia oblong 



c. Sporidia linear- fusiform or filiform 

 r>. Sporidia clavate . . . . . . . . „ 



Key to the Species. 



Externally glabrous 

 Externally more or less powdery 

 Hymenium black, margined, snbstipitate : on birch 

 Hymenium nearly black, scarcely margined, sub- 

 . . stipitate 



' 1 Hymenium blackish-brown, margined, sessile 

 I Hymenium pale cinereous ; margin fimbriate, con- 

 ^ nivent, turbinate 

 [Hymenium whitish cinereous 

 n j Hymenium yellowish . . 

 ' j Hymenium brown 

 (Hymenium black 

 /Externally rugose, powder reddish 



3. 



margin lacerated 



\ Externally even, powder whitish 



1 



2 

 ser/'atum. 



prunastri. 

 subiiitidum. 



Bibis. 



fuliginosum. 



3 



plixosporum. 



Rubi. 



ferruginostim. 



pulveraceum. 



A. SPORIDIA ELLIPTIC. 



(a) Sporidia septate. 

 1. Cenangium prunastri. Fries. 



Ca^spitose, erumpent, substipitate or subcylindrical, 

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

 blackish; hymenium plane or slightly concave, nearly 

 black, submarginate ; brown within ; asci clavate.; sporidia 

 8, oblong-elliptic, 1 -septate, 10 — 13 y 3 — 4/x ; 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/x. 

 (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 — Grev., " Flo. 



