42 ANGIOCARPOUS LICHENS. 



8. V. OLiVACEA, Pe7's. Sporidia 8 in asci, of a very 



singular clavate shape, 7 -septate, pale yellow. 

 Plate XVIII. fig. 1. 



" Verrucaeia OLIVACEA, Pers. in Ust. Ann. st. 7. 28. t. 3. f. 6. B. a. ^." 

 (1794.) 



Borr. E. Bot. Suppl. 2597. fig. 1. 



Hook. Br. Fl. ii. 150. 



Tai/l. ri. Hib. pt. ii. 89. 



Verrucaria carpinea, Ach. Meth. 120. (1803) ; L. Univ. 281 ; Syn. 88. 

 Fries, L. Ref. 448. 



Sussex ! Mr. Borrer. 



Crust of the thallus much thicker, darker coloured, 

 and more cracked than in the following ; the apothecia 

 are dull, opaque, and rugose, invested with the crust; 

 perithecia dimidiate, carbonaceous, black, nucleus white. 



9. V. FUSIFORM IS, nov. sp. Crust determinate, very thin, 



filmy, continuous, very slightly cracked, roughish, 

 olive-green ; apothecia minute, hemispherical, black, 

 glabrous, not invested with the crust, slightly po- 

 lished and shining ; sporidia 8 in asci, fusiform, 

 triseptate, pale yellow. Plate XVIIl. fig. 2. 



Sussex ! Mr\ Borrer. Verrucaria olivacea ! Bolder s 

 Licit. Brit. 



Very similar in general appearance to V. olivacea, but 

 distinguished by the above characters. The perithecium 

 is dimidiate, carbonaceous, black, with a pale inner tunic, 

 nucleus white. 



10. V. LYELLii, nov. sp. Crust determinate, filmy, con- 



tinuous, scarcely cracked, smooth, pale olive-gray 

 or green ; apothecia very minute, crowded, hemi- 

 spherical, somewhat conical, black, glabrous, 

 polished, and shining ; sporidia 8 in asci, linear-ob- 

 long, uniseptate, pale yellow. Plate XVIII. fig. 3. 



New Forest, Hants ! Mr. Lyell, in herb. Borrer. 



