AND ITS NEIGHBOURHOOD.
15
L. phlogina, Ach. On elm, Kelvedon; Braxted; Rayne.
L. sophodes, Ach. On slates, on Colchester Roman wall; and
on sandstone, Kelvedon; Colchester. f. exigua, Ach. Palings,
Walton-on-Naze; Kelvedon; Coggeshall. f. metabolica, Ach. On
sandstone, Kelvedon. Brick wall, Coggeshall. f. lecideoides, Nyl.
Old paling, Kelvedon, 1884.
L. erysibe, Ach. Trees and walls, Kelvedon ; Halstead; Feer-
ing. f. fuscocinerea, Mudd. On hedge-bank, Inworth.
L. arthroocarpa, Dub. f. fuscella, Schoer. Fir-trees, Kelve-
don. Wood, Totham.
L. Haematomma, Ehrh. On limestone, Coggeshall.
Pertusaria dealbata, Ach. Ash-tree, Rivenhall; Kelvedon.
P. communis, D.C. Trees, Pods Wood, Messing; Braxted ;
Kelvedon ; Marks Hall.
P. melaleuca, Sm. Tree, Mile End, Colchester.
P. fallax, Pers. Trees, Kelvedon; Wickham ; Marks Hall;
Pods Wood.
P. velata, Turn. Palings, Kelvedon ; Braxted. f. variolaria-
aspergilla, T. and B. Oak-tree, Marks Hall, mixed up with P. com-
munis.
P. faginea, Ach. Trees, brick walls, palings, old posts, Kelve-
don, &c.
P. globulifera, Turn. Ash-trees, Kelvedon ; Inworth.
P. pustulata, Ach. On trees in woods, Kelvedon ; Yeldham ;
Bentley ; Braxted ; Messing.
P. leioplaca, Ach. Trees in woods, Kelvedon; Braxted;
Pods Wood.
Urceolaria scruposa, L. On brick walls and trunks of oak
and elm, Kelvedon; Braxted; Feering. f. bryophila, Ach. On
mosses on old walls, Kelvedon.
Phlyctis agelaea, Ach. On trees, oak and ash, Kelvedon ;
Braxted ; Messing ; Copford ; Halstead; Hatfield Broad Oak.
Lecidea ostreata, Hffm. On very old oak palings and posts,
abundant where it grows, Rivenhall; Kelvedon ; Marks Hall; Aid-
ham.
L. friesii, Ach. Old oak post, Inworth, 1884.
L. fuliginosa, Tayl. K—C— C. dissolves the crust.
Sandstone, Kelvedon.
L. dispansa, Nyl. On flint stones, Tiptree Heath; Wick-
ham ; Witham.