64 On the Lichen-Flora of Epping Forest,
Formerly on trees at High Beach (J. M. C.). Not observed
by me recently.
L. orosthea, var. sublivens, Nyl. — On the trunks of old
trees, near the roots, beyond the "King's Oak," High Beach
(J. M. C.). This unusual variety, distinguished from Biatora
straminea, Stenh., by the livid colour of the apothecia, was
for the first time gathered in the above locality, whence it is
now extinct in consequence of the trees being felled.
L. conizaea, Ach. — On old pales at The Warren and Copt-
hall. Not uncommon, but rarely fertile (J. M. C.). The
sterile thallus is also frequent on pales elsewhere.
L. conizaeoides, Nyl.— Ou exposed roots of old beeches in
Great Monk's Wood and at High Beach. Plentiful, but often
sterile (J. M. C.). This species was for the first time collected
in the above localities, but has since been found elsewhere in
S. and W. England.
L. parella, f. tumida, Pers. — On Epping Forest (Hb.
E. F.). Near High Beach (J. M. C). I have not recently
observed this species.
Var. turneri, Sm. — On the Forest, near King's Oak (Hb.
E. F.). On an old tree at High Beach (J. M. C.). This
seems to be now extinct.
L. cinerea, L. — On a tombstone in Walthamstow Church-
yard (E. F.), vide Forster's notes, s. n. Urceolaria cinerea. Of
this there is no specimen preserved in his herbarium, and
it is scarcely likely to be the true plant.
Tribe—Pertusariei.
Pertusaria communis, DC. — On the Forest (Hb. E. F.).
Frequent about High Beach, and here and there elsewhere
(J. M. C).
P. globulifera, T. & B. — On the Forest, near King's Oak
(Hb. E. P.). At High Beach (J. M. C). This species does
not occur in its typical state, but only in the form discoidea of
authors.
P. amara, Ach.—On Hainault Forest. Sterile (Hb. E.F.).
Fairmead Woods, and sparingly in other parts of the Forest
(J. M. C).