104 REPORT ON THE LICHENS OF EPPING FOREST.
Rhizocarpon alboatrum, Th. Fr.
var. epipolia, A. L. Sm.
On mortar of wall, Copt Hall Green ; fertile.
Tribe—GRAPHIDEI.
Opegrapha herpetica, Ach. Meth.
On hornbeam trunk, near Honey Lane Plain ; fertile.
O. vulgata, Ach. Meth.
On hornbeam trunk, Broadstrood ; fertile.
Graphis scripta, Ach.
var. serpentina, Nyl.
On hornbeam trunk between Woodberrie Hill and Grubb's
Pits ; fertile.
Phaeographis inusta, Muell-Arg.
On hornbeam trunk, near Grubb's Pits ; fertile.
Graphina anguina, Muell-Arg.
On felled hornbeam, Epping Lower Forest ; fertile.
Enterographa crassa, Fee.
On hornbeam trunks, Epping Lower Forest ; near Grubb's
Pits and elsewhere ; common ; fertile.
Tribe—PYRENOCARPEI.
Verrucaria viridula, Ach.
On cement, Jacks Hill, Theydon Bois ; fertile.
Verrucaria nigrescens, Pers.
On cement, Jacks Hill, Theydon Bois ; fertile.
Gongylia viridis, A. L. Sm.
On sandy banks, near Broadstrood, April 1910 ; Black
weir Hill ; Oak Hill, Theydon Bois, November 1910 ;
fertile (The first record of this recently described species
was from near Horsley in Surrey, February, 1910).
Pyrenula nitida, Ach.
On hornbeam trunk near Grubb's Pits ; on hornbeam
trunk between Broadstrood and Debden Green ; fertile.
The nomenclature of the undermentioned forms, included
in our [first list, having since been affected by the publication
of Miss A. L. Smith's monograph, we give the new synonymy :—
Lecidea decolorans, Flk. is now Lecidea granulosa, Schaer.
L. tricolor, With. is now Biatorina griffithii, Massal.