ri) 
Parmelia ferruginea, Fries. E. Bot. 1650. On rocks, Howden 
Gill, Roseberry ; trees, near Easby ; Airyholme. 
Parmelia ulmicola, Borr. KE. Bot. 1426. On elm-bark, near 
Easby ; and on holly, Airyholme Wood. 
Parmelia sulphurea, Hoffm. Hook. Brit. Fl. 11. 181. Basaltic 
rocks, Cliffrigg ; Lanbraugh Rigg. 
Parmelia cerina, Ach., «., Fries. E. Bot. 627.  Ash-trees, near 
Ayton; Airyholme Wood. 
Parmelia murorum, Ach., var. citrina, Scher. HK. Bot. 1793. 
Brick walls, Ayton; Stokesley ; near Yarm. 
Parmelia ventosa, Ach, E. Bot. 906. Rocks, Ayton Moor, Guis- 
bro’ Moor, &c. 
Parmelia Hoematomma, Ach. Hook. Brit. Fl. ii. 190. Rocks, 
High Cliff; near Cook’s monument; Ayton Moor. 
Parmelia Turneri, Ach. E. Bot. 857. Trunks of old ash-trees, 
Airyholme Wood ; Cliffrigg ; Mulgrave woods, near Whitby. 
Parmelia varia, Ach. E. Bot. 1666. On old posts and pales, 
Lanbraugh Rigg; near Eston. 
Parmelia ostreata, Fries. E. Bot. 1501. On old stumps, Newton 
Wood ; old hollow trees, Oggeray Gill; Baysdale. 
Parmelia parietina, Duf., var. h. substellata, Fries. E. Bot. 1794. 
On old trees, near Ayton ; near Easby. 
Parmelia parietina, Duf., var. i. concolor, Fries. Leight. fasc. 1, 
12. Old trees, near Ayton; rocks, Cliffrigg ; Kildale. 
Parmelia parietina, Duf., var. polycarpa. HK. Bot. 1795. On old 
posts, near Stokesley ; Crathorn; Yarm. 
Parmelia lanuginosa, Ach. Hook. Brit. Fl. ii. 196. On rocks, 
Broughton bank ; Baysdale. 
Parmelia caperata, Ach. Hook. Brit. Fl. ii. 198. Trunks of 
trees, near West House. 
Parmelia conspersa, Ach. E. Bot. 2097. On rocks and stones, 
on Battersby bank. 
Parmelia aleurites, Ach. E. Bot. 858. On old trees, Baysdale ; 
Oggeray Gill; Stogdale. 
Parmelia physodes, Ach. E. Bot. 126. Trunks of trees, old 
walls, &c., Ayton Moor; with apothecia, on old trees, near West 
House. 
Sticta herbacea, Delis. EK. Bot. 294. Trunks of old trees, Bays- 
dale’; on moss, in Oggeray Gill. 
Sticta pulmonaria, Ach. KE. Bot. 572. Trunks of old trees, Bays- 
dale ; Stogdale ; Easby Wood. 
