388 



BRITISH DISCOMYCETES. 



Hymeninm brownish or cinereous : on Eubus 

 Hymenium pale fuliginous : on Finns 

 Hymenium straw-coloured : on Vaccinium 

 Hymeninm dirty-yellow : on Quercus 



Hymenium pallid, livid, or yellowish : on 



Hymenium whitish : on Eubus 

 Hymeiiium whitish : on Ilex . . 



3. ^ Hymenium whitish: on Quercus 



Hymenium sooty- black: on Vaccinium 

 Hymenium pale brown: on Arctostapliylos 

 Hymenium cinereous : on Pinus 



^Hyrnenium black : on Juniperus 

 . (On the stems 



(On the leaves 



(Hymenium fuliginous : on Campanula 



\Hymenium red-brown : on Clinopodium 

 Hymenium brownish or cinereous : on Caltha 



Quercu 



6. 



\Hymenium dingy-brown : on various plants 



striatum. 



Pini. 



leptideum. 



dentaturn. 



coronatum. 



Eubi. 



1 lids. 



minutissimum. 



Vaccinii. 



Arctostaphyli. 



abietinum. 



tetrasporum. 



5 



6 



radians. 



simulatum. 



Calthse. 



repandum. 



A. SPORIDIA ELLIPTIC OR SUBELLIPTIC. 



(a) Brovm. 



1. Phacidium tetrasporum. Phil, and Keith. 



Epiphyllous, erumpent, circular or oblong, convex, 

 cinereous, seated on a brownish-yellow spot, splitting 

 irregularly into 3 or 4 lacinise ; hymenium black 

 on the surface, brownish -yellow within ; asci broadly 

 clavate ; sporidia 4, elliptic-ovate, with a septum near 

 the lower end, often with a papilla, brown, 25 28 x 17/i ; 

 paraphyses numerous, filiform, with brown, pear-shaped 

 heads, septate. 



Phacidium tetrasporum Phil, and Keith, in Gard. 

 Ckron., 1880, Sept. 4, t. 56 ; "Scott. Nat.," vi. 164. 



On the upper side of juniper-leaves while yet green, 

 simulating a Puccinea. 



About ^ a line broad. 



Name rtrpas, four, O-TTO/OOC, seed ; four-seeded. 



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



(b) Hyaline. 



2. Phacidium radians. Rob. 



Erumpent, black; receptacles minute, rounded or 

 oblong, globose, then flattened, solitary and scattered, or 



