48 ANGIOCARPOUS LICHENS. 



prominent, yet one-half immersed in the thallus, hemi- 

 spherico-conoid^ with a round simple pore on the summit, 

 brownish-black. Perithecia entire ; nucleus white when 

 moist. 



Apparently a very distinct and well-marked species, 

 hitherto unnoticed, and yet there are several features 

 about it which lead one to imagine it may possibly be a 

 state of V. gemmifera. 



19. V. PERIPHERICA5 Tayh Sporidia in asci 8, constricted 



in the middle, formed of two short obtuse cones 

 set base to base, triseptate, dark bright-brown. 

 Plate XXI. fig. 2. 



Veeeucama PERiPHERiCA, Tayl. n. Hib. pt. ii. 97. (1836.) 



Carig Mountain, county Kerry ! Dr. Taylor, in herb, 

 Borrer, Barmouth, N. Wales ! Rev. T. Salwey. 



The entire perithecia have very much the shape of 

 those of some Spha3riae ; nucleus brown. 



20. V. UMBROSA, Tayl. Sporidia in asci 8, linear-oblong, 



very narrow, slightly tapered towards each extremity, 

 triseptate, pale-yellow. Plate XXI. fig. 3. 



Vekrucaeia umbrosa, Tayl. El. Hib. pt. ii. 97. (1836.) 



Carig, county Kerry ! Br. Taylor, in herb. Borrer. 

 Craigforda, near Oswestry, Shropshire ! Rev. T. Salwey. 



Mr. Salwey {in lit. 1844) says, "Dr. Taylor now 

 regards umbrosa as an Opegrapha." Whether this be so 

 or not must be left uncertain at present, and the plant 

 retained here for the present with doubt. It is rare, and 

 difficult to obtain in perfect fructification. 



21. V. MACROSTOMA, D. C, Sporidia in asci 8, elliptical, 



margined, pale. Plate XXL fig. 4. 



Verrucaeia MACEO6TOMA, Be Cand. rLTr. ed. 3. 2. 319. (1805.) 

 _ Fries, L. Ref. 439. 



