LIMBORIK.. 67 



differs, except in the more prominent apothecia, elongated 

 at the base also : the sporidia are free and similar (see 

 Plate XXVIII. fig. 6). 



3. P. APHANEs. Sporidia not contained in asci, free, 



very minute, innumerable, linear-oblong, rounded at 

 each extremity, pale-yellow. Plate XXVIII. fig. 7. 



Verrucaria apiianes, Borr. E. Bot. Suppl. 2642, fig. 1. (1830.) 



Hook.BT.Y\.U\. 



Original specimen figured in E. B. Suppl. in herb. 

 Borrer ! 



Differs from P. leuco-cephala in the form of the spo- 

 ridia, but I am at a loss to distinguish it from P. rudis, 

 except it prove to be a constant character that the spo- 

 ridia are quite straight, not curved, and somewhat stouter. 

 Most probably they may be states of the same plant. 



4. P. NiVEO-ATRA. Sporidia not contained in asci, free, 



very minute, innumerable, linear-oblong, rounded at 

 each extremity, pale-yellow. Plate XXIX. fig. 1. 



Verrucaria niveo-atra, Borr. E. Bot. Suppl. 2637, fig. 1. (1830.) 



Hook. Br. El. 151. 



Sussex ! Mr. Borrer. Oswestry, Shropshire ! Rev. 

 T. Salwey. On ash at Red Hill, near Shrewsbury, 

 Shropshire ! 



The structure of the perithecium, and form of the 

 sporidia, readily distinguish this from Verrucaria hiformis. 



5. P. MOLLIS. Sporidia not contained in asci, free, in- 



numerable, very minute, linear-oblong, rounded at 

 each extremity, yellow. Plate XXIX. fig. 2. 



Verrucaria mollis, Tayl. El. Hib. pt. ii. 97. (1836.) 

 Carig, Co. Kerry ! Dr. Taylor, in herb. Borrer. 



Perithecium entire. 



