178 BRITISH DISCOMYCETES. 



or brownish space. When old the hymenium separates 

 from the excipulum in the manner of an operculum, 

 which led the illustrious Fries to place it in his genus 

 Eustegia. 



Name — Arundinaceus, belonging to a reed. 



Shrewsbury ! 



Subgenus II. — Pyrenopeziza. Fckl. (in part). 



Cup erumpent or superficial, globose, then expanded' 

 opening at first by a minute pore; glabrous or fur- 

 furaceous, often vertically plicate, black, cinereous, or 

 dark brown (except elaphines) ; sporidia elliptic, fusiform 

 or filiform, simple, rarely uniseptate, hyaline. (Plate VI. 

 fig. 33.) 



Name — irvpi)v, a kernel, and jpeziza ; from the globose 

 form. 



Arrangement of the Species. 



a. Cups superficial. 



(a) Sporidia elliptic or oblong . . species 12 



(6) Sporidia subf'usiform . . . . „ 13-19 



(c) Sporidia filiform .. .. .. „ 20-21 



b. Cups erumpent. 



(a) Sporidia elliptic or oblong . . . . „ 22-24 



(&) Sporidia fusiform or elongate-fusiform „ 25-27 

 (c) Sporidia cylindrical or acicular . . „ 28-32 



Key to the Species. 



Hymenium fuscous-black : on word. . .. .. fcecnnda. 



Hymenium fuliginous : on Typha . . . . . . Typhse. 



Hymenium brown .. .. .. .. ..1 



Hymenium cinereous . . . . . . . . 2 



Hymenium whitish or watery-grey . . . . . . 3 



Hymenium pallid .. .. .. .. .. Ugnicola. 



Externally brown, scabrous : on Arctium . . . . Arctii. 



Externally brownish ; margin striate : on Juncm . . micrometra. 



Externally umber-brown, rugulose; margin fim- 



^ briate : on grass graminis. 



Externally pale umber-brown, farinoso-tomentose : 



on Umhelliferx . . . . . . . . . . Grevellei. 



Externally black, rugose ; margin crenulate, paler : 



growing in lines on Plantago . . . . . . nervisequia. 



Externally blackish, mealy; margin entire: on 



2. i J'lantago . . . . . . . . . . . . Plantaginis. 



Externally black, scabrous, rugose ; margin con- 

 tracted . . . . . . . . . . . . jugom. 



.Externally blackish, squamulose : on Digitalis . . Diyitalina. 



1. 



