and the causes affecting its recent diminution. 
67 
Var. elceochroma , Acli.—On hornbeam beyond the “King’s 
Oak.” Very sparingly (J. M. C.). 
L. crustulata, Acli.—On flints about High Beach. Rather 
rare (J. M. C.). 
L. contigua, Ach..— On walls at Walthamstow (E. F.), 
fide Forster’s MS. notes. There is no specimen in his Hb., 
and probably it is not the true plant. 
L. PETRiEA, Wulf.—On pebbles at Walthamstow, and on a 
stone at Epping Forest [Hb. E. F. s. n. Lichen fusco-ater). 
On flints here and there in the Forest, plentiful about High 
Beach (J. M. 0.). 
L. alboatra, var. epipolia , Ach. — On walls about Wal¬ 
thamstow [Hb. E. F.). I have not anywhere observed this 
plant. 
L. myriocarpa, DO. — Elms at Higham Lodge, Waltham¬ 
stow (D. Turner), fide Forster’s MS. notes, s. n. Lichen 
pinicola. On a tree in field at Hoe Street [Hb. E. F.). In 
Hawk Wood, at High Beach, and elsewhere in the Forest. 
Not uncommon (J. M. C.). 
L. premnea, Ach. — On trees on Epping and Hainault 
Forests (E. F.), fide Forster’s MS. notes, s. n. Lichen cibie- 
tinus. Near Chapel Lodge Farm, Hainault Forest; and also 
near the “ Bald-faced Stag,” Epping Forest (fTAE.F.). Near 
the “King’s Oak,” and Copthall. Sparingly (J. M. C.). 
L. ostreata, Hoffm.—In garden, Hoe Street, Walthamstow. 
Sterile [Hb. E. F. s. n. Lichen scalaris). On palings at The 
Warren, and Copthall. Sterile (J. M. C.). 
L. caradocensis, Leight. — On decorticated trunks of old 
trees at Hawk Wood, and near High Beach. Sterile 
(J. M. C.). 
Tribe— Graphidiei. 
Graphis elegans, Sm. — On an old holly near High Beach 
(J. M. C.). Not seen elsewhere, and now apparently extinct. 
F. coarcervata, Leight. — On an old ash-tree (since felled) 
near Copthall Lodge (J. M. C.). Only a single specimen seen. 
G. dendritica, Acli. — On Epping Forest, between Wood¬ 
ford Wells and Chingford Hatch [Hb. E. F.). Formerly 
plentiful about High Beach, but now rare (J. M. C.). 
