VERRUCARIEiE. 61 



filmy, dotted all over with minute olive-grey dots, pro- 

 bably arising from the outer layer being rubbed off, and 

 disclosing the substratum of green dots. 

 Abundantly distinct from V. immersa. 



38. V. PATULA. Sporidia in asci 8, oblong, margined, 



granulate, pale-brown. Plate XXVI. tig. 1. 



Sussex ! Mr, Borrer. 



Thalliis white, crustaceous ; apothecia imbedded in the 

 thallus, the apex only visible, half the size of V. muralis, 

 with which it is possibly often confounded, being found 

 growing on mortar, &c., the habitats of that plant. Peri- 

 theciiwi dimidiate, more or less spreading at the base ; 

 nucleus pale brown, enveloped in a pale brown inner tunic. 



The entire perithecium and uniseptate sporidia in 

 V. muralis distinguish it from this plant, which is found in 

 similar localities. Doubtful if distinct from V. rupestris, 

 Schrad., and introduced here for the purpose of ascertain- 

 ing its difference or identity by further examinations. 



39. V. EPiPOL^A, Ach, Sporidia in asci 8, oblong, 

 uniseptate, pale-yellow. Plate XXVI. fig. 2. 



Veebucaeia efipol/EA, Ach. L. Univ. 285. (1810); Syn. 95. 



Borr. E. Bot. Suppl". 2647, fig. 3. 



Hook. Br. F). ii. 154. 



Tayl. Fl. Hib. pt. ii. 92. 

 Verkucaeia conoidea, Friesy L. Ref. 432. (1831) (in part.) 



Limestone rocks, Oswestry, Shropshire ! Bev, T. Salwey. 

 Craig-y-Rhiw, parish of Oswestry, Shropshire ! 



The widely spreading base of the perithecium and its 

 sporidia separate this from V, Bufourii; the former cha- 

 racter and its place of growth from V. gemmata ; its pale 

 inner tunic and uniseptate sporidia from K mhalhicans ; 

 and its dimidiate perithecium keeps it distinct from 

 V. muralis ; whilst the sporidia sufficiently distinguish it 

 from V. rujpestris and V. patula. 



