24. L. rimosa.
Lichen rimosus, Enij. Bot. 1736.
Upon the Encrinal Limestone on the Teesdale Moors, and in Weardale and Allendale, D. and N.
25. L. epipolia.
Ach. Syn. 32; Lichen epipolius, Eng. Bot. 1137; E. niveo-ater, Dick. Crypt. Fasc. iv. t. 12, f. 3.
On Cleadon, Boldon, and Fulwell Hills,and on walls at Gainford, D. On the walls of Wycliffe Church.
26. L. corticola.
Ach. Syn. 32; Lichen corticola, Eng. Bot. 1892.
On old trees at Gainford, and near Medomsley, D.
27. L. quernea.
Ach. Syn. 36; Lichen querneus, Eng. Bot. 485.
On old trees about Newcastle, N. In Newton Cap Wood, near Bishop Auckland, D.
28. L. viridescens.
Ach. Syn. 36; L. hypnophila, Northumberland and Durham Guide, ii. 37; Lichen viridescens, Eng. Bot. 2217.
On Hypnum sericeum, in woods near Eglestone in Teesdale, D. — Rev. J. Harriman.
29. L. incana.
Ach. Syn. 36; Gr. Fl. Eds. 326; Lichen incanus, Eng. Bot. 1683.
On the barks of trees and mosses, but never in fructification.
30. L. sulphurea.
Ach. Syn. 37; Berwick Flora, ii, 88; Lichen sulphureus, Eng. Bot. 1186.
On rocks and stones frequently covering other Lichens.
Probably not a good species.
31. L. orosthea.
Ach. Syn. 37; Lichen orosthea, Eng. Bot. 1549.
Upon the bark of trees by the Derwent near Gibside, D.
32. L. decolorans.
Ach. Syn. 37; Hook. Fl. Scot. ii. 39.
β Lichen escharoides, Eng. Bot. 1247; L. quadricolor, Eng. Bot. 1185.
α In a wood at Eglestone. β upon the ground on Gateshead Fell, and on earth upon the tops of walls near Eglestone, also on Feat bogs on the Teesdale Moors, on Muggleswick Fell, and near
Medomsley, D. At Prestwick Carr, and on Cheviot and Hedgehope, N.
33. L. anomala.
Ach. Syn. 38; Lichen ferruginosus, Turner, Linn. Tr. v. 7; L. tricolor, With., 5th ed , iv. 20. β cyrtella, Lichen cyrtellus, Eng. Bot. 2155.
On the bark of trees near Gainford, D.
34. L. calva.
Northumberland and Durham Guide, ii. 39; Lichen calvus, Eng. Bot. 948; Dick. Crypt. Fasc. ii. 18, t. 6, f. 4; L. rupestris, Ach. Syn. 39.
On the Magnesian Limestone on Cleadon and Boldon Hills, on the Encrinal Limestone near Middleton-in-Teesdale, and near the New Bridge below Barnardcastle, D.
35. L. rupestris.
Northumberland and Durham Guide, ii. 39; Lichen rupestris, Eng. Bot. 2245.
On Sandstone walls behind Beamish Hall and in the neighbourhood of Gainford, D.
This species differs from L. calva by its crust being cracked and green within, whereas that of L. calva is contiguous and white within.
36. L. lutcola.
Ach. Syn. 41; Hook. Fl. Scot. ii. 39; Berwick Flora, ii. 89; Lichen vernalis, Eng. Bot. 845; L. porriginosus. Turner, Linn. Tr. vii. 94, t. 8, f. 4; L. vernalis, Ach. Syn. 36?
On trees near Hexham, N. On trees and moss near Eglestone and Gainford, D.
By no means rare in the north.
37. L. carncola.
Ach. Syn. 42; Lichen corneus, Eng. Bot. 965.
On old oaks in a wood near Eglestone, D. First found by the Rev. J. Harriman.
38. L. Griffithii.
L. carncola β, Ach. Syn. 42; Lichen Griffithii, Eng. Bot. 1735; L. tricolor, Northumberland and Durham Guide, ii. 36.
On the bark of old oaks in Newton Cap Wood, near Bishop Auckland, and in the Bishop's Park, also near Gainford, D. Found by the Rev. J. Harriman.
39. L. fusco-lutea.
Ach. Syn. 42; Lichen fusco-luteus, Eng. Bot. 1007.
Upon Cheviot and Hedgehope, N.
40. L. anthracina.
Ach. Syn. 43; Hook. Fl. Scot. ii. 39; Berwick Flora, ii. 89; Lichen byssinus, Eng. Bot. 432.
On rocks at Hudshead, N. — Dr. G. Johnston. Probably not distinct from Lecanora crenulata.
41. L. ferruginea.
Lichen ferrugineus, Eng. Bot. 1650; Hudson, 526; L. caesio-rufa, Ach. Syn. 44; Gr. Fl. Eds. 237; Berwick Flora, ii. 89; L. crenulata, Ach. Meth. 71.
On trees and walls near Lanchester, also near Eglestone, D. On Roadley Crags, N. On Hudshead near Berwick. — Dr. G. Johnston.
I see no reason for altering the very appropriate specific name given by Hudson to this Lichen.
42. L. icmadophila.
Ach. Syn. 45; Gr. Fl. Eds. 327; Lichen ericetorum, Eng. Bot. 372.
On Peat bogs, frequent.
43. L. marmorca.
Ach. Syn. 46; Gr. Fl. Eds. 327; Lichen marmorens, Eng. Bot. 739.
β L. cupularis, Ach. Meth. 56.
On the Magnesian Limestone at Fawdon Slate, and on the Encrinal Limestone in Bolyhope Bourn, also near Middleton in-Teesdale, on mosses and Limestone rocks in Harewood, and near Wycliffe in the bed of the Tees, D.
44. L. alabastrina, β sphaeroides.
Ach. Syn. 46; Lichen sphaeroides, Dick. Crypt. Fasc. i. 9. t. 2, f. 2.
In Bradley Wood near Medomsley, D.
Only a variety of Lichen vernalis, Eng. Bot. 845.
45. L. rosella.
L. alabastrina γ, Ach. Syn. 46; Lichen rosellus, Eng. Bot. 1651.
On the bark of trees near Eglestone, D.
46. L. argena.
Ach. Syn. 47; Lichen argenus, Eng. Bot. 1923.
On the bark of trees in Cawsey Wood, D.
47. L. Ehrhartiana.
Ach. Syn. 47; Lichen Ehrhartianus, Eng. Bot. 1136; β polytropa, L. polytropus, Eng. Bot. 1264.
