100 
walls, Ayton Moor, Battersby Moor, &c. Several varieties may be 
met with on Guisbro’ Moor, so far as regards size and ramification. 
Cetraria glauca, Ach. E. Bot. 1066. On rocks and trees, near 
West House ; Battersby Moor; near Cook’s monument. 
Cetraria sepincola, Ach. E. Bot. 2386. On pine-trees, near Kil- 
dale ; near West House ; Ingleby. 
Peltigera horizontalis, Hoffm. E. Bot. 888. About the roots of 
trees, Oggeray Gill. 
Peltigera aphthosa, Hoffm. E. Bot. 1119. Shady rocks, Beech- 
bank, Kildale. 
Peltigera canina, Fr. E. Bot. 2229. Upon the ground, among 
moss, &c., very common; Ayton. 
Peltigera spuria. HE. Bot. 1542. On mossy banks, Oggeray Gill ; 
Ayton Moor; near Roseberry. 
Peltigera rufescens. KE. Bot. 2300. On banks, and mossy trunks 
of trees, Ayton; near Newton. 
Solorina saccata, Ach. KE. Bot. 228. Inthe clefts of rocks, Beech- 
bank ; Kildale. 
Parmelia saxatilis, Ach. E. Bot. 603. Frequent upon trees, 
rocks and stones, Ayton Moor, Kildale, &c. 
Parmelia saaatilis, Ach., var. furfuracea, Leight. Leight. fasc. 2, 
46. Upon rocks, near Cook’s monument. 
Parmelia saxatilis, Ach., var. omphalodes, Fries. EK. Bot. 604. 
On rocks and stones, Ayton Moor; Ingleby ; near Castleton. 
Parmelia olivacea, Ach. E. Bot. 2180. On the bark of trees, 
pales, &c., frequent ; Ayton; Stokesley. 
Parmelia pulverulenta, Ach. E. Bot. 2063. Very common on 
the trunks of trees, Ayton. 
Parmelia stellaris, Ach. KE. Bot. 1697. Frequent on the bark of 
trees, Ayton, &c. 
Parmelia obscura, a. orbicularis, Fr. E. Bot. 1942. On the bark 
of ash-trees, Ayton; near Guisbro’; Kirkleatham. 
Parmelia incurva, Hook. E. Bot. 1875. On sandstone rocks, 
Battersby Moor. 
Parmelia saxicola, Ach. E. Bot. 1695. On rocks and stones, 
Ayton Moor; Lanbraugh Rigg. 
Parmelia saxicola, Ach., var. areolata, Leight. Leight. fase. 3, 81. 
On rocks, top of Cliffrigg. 
Parmelia murorum, Ach. E. Bot. 2157. On rocks and walls, 
near Stokesley ; Mulgrave Old Castle; Danby Castle. 
