300 BRITISH DISCOMYCETES. 



Exs. Fckl., " F. Rh.," No. 1858; Karst., "Fung. Fenn," 

 No. 552. 



On cow and rabbit dung. 



Cups 100 to 200/j broad. 



Name After Dr. M. C. Cooke. 



Near Hereford (Mr. J. Renny). Near London (Dr. 

 M. C. Cooke). Near Bath (Mr. C. E. Broome). Forres, 

 N.B. ! (Rev. Dr. Keith). 



2. Ryparobius dubius. Boud. 



Scattered, excessively minute, often immersed, rotun- 

 date, pallid-grey or fulvous ; hymenium convex, pellucid, 

 immarginate ; asci oblong or oblong- ovate, hyaline, 

 obtuse at the base, or slightly attenuated ; sporidia 

 128(?), elliptic, hyaline, subacute; paraphyses none or 

 very rare, short, hyaline, septate. 



Ryparobius dubius Boud., " Ascob," t. 10, f. 26 ; 

 B. and Br., Ann. Sc. Nat," No. 1392 ; Cooke, " Grevillea," 

 ii. p. 163 ; Bucknall, "Fung. Bristol," pt. 2, p. 349. 



On horse and rabbit dung. 



This is the smallest and least visible species of the 

 genus, being difficult to discover even with the aid of 

 a lens. It is distinguished from its congeners by its 

 numerous sporidia, its being generally paler in colour, 

 immersed, always scattered, and having asci not narrowed 

 at the base into a stem. 



Name Dubius, doubtful. 



Leigh Downs, near Bristol ! (Mr. C. Bucknall). Bath- 

 ford (Mr. C. E. Broome). 



(b) Margin ciliated. 

 3. Ryparobius Crouani. (Renny.) 



Very minute, at first clear white, then whitish, fragile, 

 sessile, hemispherical, glabrous, exterior of cup formed of 

 a single series of cells ; margin ciliated with a single 

 series of short, rough, subacuminate hairs ; asci broadly 

 clavate ; sporidia 32, oblong-fusiform, obtuse at the 

 ends, hyaline, smooth ; paraphyses not seen. 



Ascozonus Crouani Renny in " Trans. Woolhope 



