28 ANGIOCARPOUS LICHENS. 



asci large, each containing 2, or not unfrequently 3, spo- 

 ridia of the same size, colour, shape, and structure as in 

 P. communis a. 



2. P. CEUTHOCARPA, Tum. and o7t. Sporidia 2 in 

 asci, smaller, narrow-elliptical, pale yellow, enve- 

 loped in a hyaline double membrane, as in the last. 

 Plate IX. fig. 4. 



LicuEN CEUTHOCARPus, Sm. E. Bot. 2372. (1812.) 



Pertusaria CEUTHOCARPA, Tum. and JBorr. Licli. Brit. 200. (1813.) 



Fries, L. Reform. 423. 



7/00/5:. Br. n. ii. 160. 

 PoRiNA CETJTHOCAaPA, Ta^l. Fl. Hib. pt. ii. 102. (1836.) 



The specimen figured in E. Bot. from Ireland ! r/i 

 herh. Borrer. Barmouth ! Itev. T. Sahoey. 



Mr. Borrer writes {in lit. 1850,) *'I have a speci- 

 men from Dr. Taylor, quite proving his correctness in 

 joining Lichen microsticticus, Sm. E. Bot. (t. 2243,) 

 to Fertusaria ceuthocarpa. Fries refers it, under the 

 Acharian name Isidiiim lavigatum, along with upwards 

 of 20 more Acharian species, of various genera, to Far- 

 melia (TJrceolarid) cinerea, but I do not think him right.'' 

 I presume a specimen labelled " Verrucariay allied to 

 V. Hookeri, Borr., Pigeon Island"! sent by Dr. Taylor to 

 Mr. Borrer, must be referred to this species. The crust 

 of the thallus is cream-coloured, waxy, the surface (which 

 seems to be for the most part destroyed) rugged or irregu- 

 larly raised, irregularly and angularly cracked, with a 

 greenish layer underneath the surface. Apothecia large, 

 generally one in each areola, brownish in appearance, 

 surrounded with a pale waxy ring, being part of the 

 tunic exposed. Nucleus enclosed in a thickish, tough, 

 pale brown tunic, the exposed upper portion with a dark 

 brown carbonaceous (?) pseudo-perithecium ; pore very 

 large and simple. Asci few in number, large, surrounded 

 at the base with a tuft of twisted entangled fibres or 

 paraphyses, highly hygrometric. Sporidia 2 in each 

 ascus, very large, linear-oblong, pale yellow, enveloped 



