Mr. Turner's Descriptions of Eight New British Lichens. 13<) 



of green immediately beneath the surface. It is wholly desti- 

 tute of that intensely bitter taste which prevails in V. faginea, 

 and which, as Mr. Borrer has most justly observed, will always 

 serve to distinguish that plant from all the varieties of V. dis- 

 co idea. 



Variolaria clobulifera. 



Variolaria, crustd tartared effusa glaucescente; sorediis sphrericis 

 clausis, mox apice dehiscentibus ; propagulis niveis. 



Tab. X. Fig. 2. 



On the bark of beech, and sometimes of oak, in Sussex, 

 scarce. Mr. Borrer. 



Alga arborea, Crustacea, absque ullo ordine efFusa, latitudine 

 palmaris, et ultra. 



Crusta crassiuscula, sub-aequalis, continua, laevis, sed hie 

 illic pulvere alb^f quasi per crustam erumpente, perfusa, qui 

 interdum ita copiosus, ut tota planta pulverulenta evadat, co- 

 lore e glauco albicante in stirpe cum madefacta turn sicca 



eodem. 



Soredia nequaquam frequentia, sphaerica, pisi satki seminis 

 fere magnitudine, margine crustae concolore, et quasi ab ilU 

 formato, centro depressa, impressione principio parv&, et mem- 

 bran^, tenui obtectd, mox se dilatante, et demum dehiscente 

 unde propagula nivea elabuntur : in soredio dissecto discus in- 

 tense viridis, tenuis, propagulis undequaque cinctus se conspi- 

 ciendum praebet. 



Substantia tartarea. 



The unequal and filmy, yet tartareous crust of this Lichen 

 spreads widely over the bark, breaking forth every where into 



X 2 powdery, 



