BIRCH GROVES OF EPPING FOREST. 79
The ground flora varies slightly, but most of the following
plants occur except where the bracken is abundant.
PHANEROGAMS.
Agrostis canina Nardus stricta
Calluna vulgaris with var. Prunus spinosa
incana Potentilla erecta
Carex pilulifera Rumex Acetosella
Cytisus scoparius Solidago virgaurea
Deschampsia flexuosa Salix repens
Galium saxatile Teucrium Scorodonia
Lonicera Periclymenum Ulex europaeus
Melampyrum pratense Ulex minor
Molinia coerulea
MOSSES.
Aulacomnion palustre Hypnum Schreberi
Ceratodon purpureum Polytrichum commune
Dicranella heteromalla Polytrichum juniperinum
Funaria hygrometrica Webera nutans
LICHENS.
On the ground:—
Cladonia digitata var. denti- C. squamosa
ciliata C. furcata
C. fimbriata C. coccifera
C. Floerkeana Peltigera spuria
C. macilenta Lecidea uliginosa
C. pyxidata
On trees:—
Parmelia physodes Lecanora varia
P. fuliginosa var. laetevirens
FUNGI.
On the ground:—
Agaricus muscarius Boletus scaber
On trees:—
Exoascus betulae Polyporus betulinus
Hypoxylon concentricum Polysticum hirsutum
Lenzites betulina Pholiota squarrosa
Melanconis stilbostoma Valsa betulina
Melamspora betulina