REPORT ON THE LICHENS OF EPPING FOREST. 143
Plain; Grubb's Pit; Wake Valley; and elsewhere.
Rather rare, but still fertile.
Tribe—PHYSCIEI.
Xanthoria (Physcia) parietina, Ach.
On beech trunk, Little Monk Wood; fertile.
Form 2, cinerascens, Leight.
var. B. aureola, Nyl.
On roots of beech, High Wood, Fair Mead; fertile;
f. congranulata, Cromb. On wall at Epping; on brick
wall, Honey Lane Plain; on mortar, Nazing Church;
fertile.
Physcia stellaris, Sub. sp. tenella, Nyl.
On a wall at Leppits' Hill; roots of trees near Fair-
mead Oak. Small and sterile.
P. caesia, Nyl.
On root of felled tree at Woodreddon Hill. This is a
most interesting plant. It usually occurs on walls and
roofs, but in this locality it is apparently healthy,
although sterile. Thought by Crombie to be extinct.
Tribe—LECANO-LECIDEEI.
Sub-Tribe—EECANOREI.
Lecanora (Placodium) murorum, Ach. Lich. Univ.
On wall, Black Acre Farm, Theydon Bois; brick wall,
Uplands, Loughton; Nazing; fertile. Not given by
Crombie.
L. vitellina, Ach. Lich. Univ.
On wall at Leppits' Hill and at High Beach; fertile.
L. galactina, Ach. Lich. Univ.
Found throughout the Forest wherever there is an old
wall; fertile.
L. allophana, Nyl.
On trunk of Hornbeam, near Loughton Camp; Wood-
berrie Hill; Honey Lane Quarters; and Copped Hall;
between Robin Hood and Shelley's Hill; fertile.
L. Sub. sp., chlarona, Nyl.
On trunk of beech, Great Monk Wood; Little Monk
Wood ; near Woodberrie Hill; between Broadstrood
and Debden Green ; near York Hill; fertile.