REPORT ON THE LICHENS OP EPPING FOREST. 
103 
L. parella, Ach. 
On mortar of brick wall, Copt Hall Green ; fertile. 
S ub- Tribe—PERT USA RIEL 
Pertusaria leioplaca, Schaer. 
On hornbeam trunk to west of Staples Hill ; on oak trunk 
between Woodberrie Hill and Grubbs Pits ; fertile. 
Sub-Tribe—THELOTREMEI. 
Phlyctis argena, Koerb. 
On hornbeam trunk, between Broadstrood and Debden 
Green ; fertile. 
Urceolaria scruposa, Ach. Meth. 
On brick walls, Theydon Bois ; Uplands, Loughton ; 
fertile. 
Sub-Tribe—LECIDEEI. 
Lecidea ostreata, Schaer. 
On oak trunks, usually towards the base, in and about 
Loughton Camp ; Jacks Hill ; sterile. 
L. lucida, Ach. Meth. 
On north faces of brick walls, Theydon Bois, Loughton, 
Highbeach, and elsewhere ; sterile. 
L. quernea, Ach. Meth. 
On decaying bark, Great Monk Wood; near Loughton 
Camp. 
C. coarctata, Nyl. 
On flint pebble, Black weir Hill; on brick coping, Debden 
Slade ; fertile. 
L. flexuosa, Nyl. 
On decayed stump between Sandpit Plain and Little 
Monk Wood ; on hornbeam trunk, Grubb’s Pits ; fertile. 
L. uliginosa, Ach. Meth. 
On damp ground, Oak Hill, Theydon ; about Loughton 
Camp ; Great Monk Wood ; near Robin Hood ; fertile. 
L. fuliginea, Ach. 
On rotting stumps, Loughton Camp; between Sandpit 
Plain and Little Monk Wood ; fertile. 
L. parasema, Ach. Meth. 
On hornbeam trunk, near Grubb’s Pits ; fertile. 
L. crustulata, Koerb. 
On flint-pebbles, Little Monk Wood, Blackweir Hill; 
fertile. 
