21. C. rangeferina.
Ach. Syn. 277; Berwick Flora, ii. 93; Lichen rangeferinus, Eng. Bot. 173.
δ pungens.
α On moors and heaths, abundant. δ on Hexham and Dilston Fells, N.
75. BAEOMYCES.
1. B. roseus.
Ach. Syn. 280; Lichen ericetorum, Eng. Bot. 372; Lightfoot, 809.
On earth, in mountainous situations.
2. B. rufus.
Ach. Syn. 280; Berwick Elora, ii. 98; Lichen rufus, Hudson, 527; B. rupestris, Northumberland and Durham Guide, ii. 64; Lichen Byssoides, Eng. Bot. 372; Lightfoot, 809.
On earth and stones in denes and on moors, N. and D. In Scotswood and Heaton Denes, and on the Roman station at Caervoran, N. In Twizell Dene, N.— Mrs. Selby.
3. B. placophyllus.
Ach. Syn. 281; Northumberland and Durham Guide, ii. 64.
On the moors about Eglestone, D., rare. — Rev. J. Harriman.
76. ISIDIUM.
1. I. corallinum.
Ach. Syn. 281; Berwick Flora, ii. 98; Lichen corallinus, Eng. Bot. 1541.
β dealbatum, Variolaria dealbata, Eng. Bot. 2519.
α On rocks and stones in mountainous situations, N. and D. On the Roman wall at House-steads, N. On Murton Crags, N. — Dr. G. Johnston, β on the Teesdale Moors, D.
2. I. Westringii.
Ach. Syn. 282; Lichen Westringii, Eng. Bot. 2204; Dicks. Cryp. Fasc. iv. 20.
On stone walls in Teesdale Forest, and in Weardale, D. In Allendale, and on the Roman wall at Housesteads, N. In Holwick. — Rev. J. Harriman.
3. I. microsticticum.
Hook. Fl. Scot. ii. 66; Lichen microsticticus, Eng. Bot. 2243; L. punctatus, Dicks. Crypt. Fasc. iii. 15.
On walls in Teesdale Forest, D.
4. I. phymatodes.
Ach. Syn. 282; Northumberland and Durham Guide, ii. 47.
In Newton-cap Wood, and in the Bishop's park at Bishop Auckland, D. — Rev. J. Harriman.
77. STEREOCAULON.
1. S. paschale.
Ach. Syn. 284; Hook. Fl. Scot. ii. 66; Lichen paschale, Eng. Bot. 282.
On rocks and stones in sub-alpine situations.
2. S. condyloideum.
Ach. Syn. 285.
On the Roman wall at House-steads, N. In the north-west of the county of Durham.— Mr. John Thornhill.
3. S. cereolinum.
Ach. Syn. 285; S. Cereolus, Eng. Bot. t. 2667; Lichen Vulcani, Bory, Voy. ii. 147.
On Basaltic rocks and stones near Eglestone, D. — Rev. John Harriman. On the Roman Wall at Walltown, and east of Housesteads, N.
4. S. namum.
Ach. Syn. 285.
On rocks and stones in Teesdale Forest, D. — Rev. John Harriman.
78. SPHAEROPHORON.
1. S. coralloides.
Ach. Syn. 287; Berwick Flora, ii. 97; Lichen globiferus, Eng. Bot. 115; Lightfoot, 887.
On the Teesdale and Weardale Moors, D. On Cheviot, Simonside, Hedgehope, and on the Roman wall at House-steads, also on Gunnerton Crags, and near Harbottle and Heddon-on-the-Wall, N.
2. S. fragile.
Ach. Syn. 287; Berwick Flora, ii. 97; Lichen fragilis, Lightfoot, 888; Eng. Bot. 2474.
On Cheviot, Hedgehope, Simonside, and the Harbottle Moors, N. On the Weardale and Teesdale Moors, D.
Probably a variety of S. globiferus.
3. S. compressum.
Ach. Syn. 287; Hook. Fl. Scot. ii. 67; Lichen fragilis, Eng. Bot. 114.
On rocks at Eglestone, Knitsley, and Muggleswick, D. On Shaftoe Crags, Harbottle Moor, and Gunnerton Crags near Barwesford, also on Cheviot, Hedgehope, and Simonside, N.
79. ALECTORA.
1. A. jubata.
Ach. Syn. 291; Berwick Flora, ii. 92; Lichen jubatus, Lightfoot, 891; Eng. Bot. 1880; Parmelia jubata, Northumberland and Durham Guide, ii. 60.
β chalybeiformis.
α On Gunnerton Crags and rocks at Harlow Hill, near Rothbury, on Cheviot and Simonside, also at Shewing-shields, where it was observed by Wallis, N. On Murton Crags, at Rawse Castle and
Hepburn Hill near Chillingham, N. — Dr. G. Johnston. Upon the common heath, and on rocks and trees near Eglestone, D. β on trees in Charnberry near Eglestone, D. α on Gateshead Fell, D. —Mr. J. Thornhill.
80. RAMALINA.
1. R. polymorpha.
Ach. Syn. 295; Parmelia polymorpha, Northumberland and Durham Guide, ii. 60.
On rocks and stones in the neighbourhood of Eglestone, D. — Rev. J. Harriman.
2. R. fraxinea.
Ach. Syn. 296; Berwick Flora, ii. 90; Lichen fraxineus, Eng. Bot. 1781.
On trees, common.
3. R. fastigiata.
Ach. Syn. 296; Berwick Flora, ii. 91; Lichen fastigiatus, Eng. Bot. 890.
On trees and pales, frequent.
4. R. scopulorum.
Ach. Syn. 297; Hook. Fl. Scot. ii. 68; Gr. Fl. Eds. 348; Berwick Flora, ii. 90; Lichen scopulorum, Eng. Bot. 688; β siliquosus, With. iv. 40. On rocks near the sea coast at Newbiggen, Dunstanborough, and Bamborough Castles, on the Heugh and St. Cuthbert's Island, Holy Island, also on the
