302 GUERNSEY. 
Verrucaria chlorotica. Ach. 
In several places at St. Martin’s; usually on shaded stones in 
hedges. f. trachona, Tayl. Fermain cliffs. f. carpinea, Schaer. 
On trees near the Gouffre. 
Verrucaria nitida, Weig. 
Common on trees, especially Ash. One of the largest and most 
elegant species of the genus, often growing in company with the 
var. nitidella, Flk., but the latter is less common in this island. 
