α and β on Sandstone walls near Newcastle, N. On rocks and walls on Gateshead Fell, also in Teesdale and Weardale, D.
48. L. luteo-alba.
Ach. Syn. 49; Lichen luteo-albus, Eng. Bot. 1426.
On the bark of trees in West Crow Wood near Wolsingham, and near Gainford, D.
49. L. vesicularis.
Ach. Syn. 51; Lichen coeruleo-nigricans , Eng. Bot. 1139; Lightfoot, 805.
On Limestone rocks at Fawdon Slate and Boldon, also upon earth on Limestone in Weardale and Middleton-in-Teesdale, D. On Cleadon and Fulwell Hills, D.— Mr. J. Thornhill.
50. L. lurida.
Ach. Syn. 51; Lichen luridus, Eng. Bot. 1329.
On earth upon a rock called the Marble Stone near Middleton-in-Teesdale, D.
51. L. atro-rufa.
Ach. Syn. 51; Northumberland and Durham Guide, ii. 41; Lichen atro-rufus, Eng. Bot. 1102; Dicks. Crypt. Fasc. iv. 22, t. 12, f. 4.
On earth upon wall tops in Teesdale Forest, D. Also in Lunedale. — Rev. J. Harriman.
52. L. pholidiota.
Ach. Syn. 53; Lichen globulosus, Eng. Bot. 1955.
Abundant on Sandstone rocks at Lanchester, and walls at Knitsley, D., Nov. 1804.
53. L. canescens.
Ach. Svn. 54; Lichen canescens, Eng. Bot. 582; Dick. Crypt. Fasc. i. 10, t. 2, f. 5.
On walls and trees near Gainford and Houghton-le-Spring, D. Near Hexham and Brinkburn Priory, N.
54. L. aeruginosa.
Eng. Bot. 2682.
On old rails and gate posts, not rare.
55. CALICIUM.
1. C. stigonellum.
Ach. Svn. 56; C. sessile, Eng. Bot. 2520; Lichen gelasinatus, With., 5th ed., iv. t. 31, f. 1.
On the bark of trees near Gainford, D. — Rev. J. Harriman. In Oakwood and Dilston Park, N.
2. C. claviculare.
Ach. Syn. 57; Lichen clavellus, Eng. Bot. 1465.
β subtile.
α On trees in Oak Wood and near Hexham, N. Near Eglestone, D. β in Cawsey Wood, D.
3. C. sphoerocephalum.
Ach. Syn. 57; Lichen sphoerocephalus, Eng. Bot. 414.
On trees near Hexham, N. On trees and old wood near Eglestone, D.
4. C. hyperellum, β roscidium.
Ach. Syn. 59; Lichen graniformis, Eng. Bot. 1464.
On trees in Cawsey Wood, D. In Oak Wood and Felton Woods, N.
5. C. cantharellum.
Ach. Syn. 61; Eng. Bot. 2557.
β C. peronellum, Ach. Meth. 96.
In East Common Wood near Hexham, and in Felton Wood, N. On decayed wood near Eglestone, D.
6. C. capitellatum.
Ach. Syn. 61; Lichen capitatus, Eng. Bot. 1539.
On banks at Cow-close near Ravensworth, and in Long-acre Wood, D. In Felton Wood, N. Near the roots of trees on the south bank of the Wansbeck at Wallington, N.— Miss Emma Trevelyan, Sp.
56. GYROPHORA.
1. G. glabra.
Ach. Syn. 63; β polyphylla, Lichen polyphyllus, Eng. Bot. 1272.
On Cheviot and Hedgehope, also on Shaftoe and Roadley Crags near Wallington, N. On rocks and stones above Blanchland, and near Hunt Hall, Teesdale, N. and D.— W.C. Trevelyan, Esq. In the neighbourhood of Eglestone, and on walls at Healy Field and Conset Park. In fructification on rocks at the foot of Hunsterley Peak, between Waskerley Park and Hishope, D. — Mr. J. Thornhill.
2. G. proboscidea.
Ach. Syn. 64; Berwick Flora, ii. 99; Lichen proboscideus, Eng. Bot. 522 and 2484; G. cylindrica, Ach. Syn. 65; Berwick Flora, ii. 99; Lichen deustus, Lightfoot, 861.
On Shaftoe Crags near Wallington, and on Cheviot and Hedgehope, N. On walls and rocks in Teesdale near the High Force,in Harewood, particularly between Widdy Bank and Cauldron Snout, D;
also on Cronkley Fell.
Acharius has separated G. proboscidea from G. cylindrica, but they are the same plant in different stages of growth.
3. G. crosa.
Ach. Syn. 65; Eng. Bot. 2066; Lichen torrifactus, Lightfoot, 862.
On rocks at Hunsterley Peak, north-west of Waskerley Park, also near Eglestone, particularly about Blackburn, D. On Cronkley Fell, Teesdale. On Cheviot and Hedgehope, N.
4. G. deusta.
Ach. Syn. 66; Eng. Bot. 2483; Hook. Fl. Scot. ii. 42; Gr. Fl. Eds. 328.
On rocks of the Millstone Grit at Roadley near Wallington, N. — W.C. Trevelyan, Esq.
5. G. pustulata.
Ach. Syn. 66; Hook. Fl. Scot. ii. 42; Lichen pustulatus, Eng. Bot. 1283.
On the Millstone Grit at Shaftoe Crags near Wallington, N.
First noticed there by Miss Emma Trevelyan.
6. G. pellita.
Ach. Syn. 67; Hook. Fl. Scot. ii. 42; Lichen pellitus, Eng. Bot. 931; L. polyrrhizus, Lightfoot, 864.
On Shaftoe Crags, Hedgehope and Cheviot, also on Hexham Fell, N. On Muggleswick Fell, D. On Cronkley Fell, Teesdale.
57. OPEGRAPHA.
1. O. Persoonii.
Ach. Syn. 71; Eng. Bot. 2345; Berwick Flora, ii. 99.
Upon sandstone rocks on the coast of Northumberland. Upon Hudshead, and on Sandstone dykes near Berwick, abundant, N. — Dr. G. Johnston.
2. O. tesserata.
Eng. Bot. t. 2632, f. 3; Lam. and De Cand. ii. 313; O.petraea, Ach. Syn. 72.
On rocks above Middleton-in-Teesdale, D. Sent to Acharius by the Rev. J. Harriman.
