98 
Lecidea leucoplaca, Chev. Leight. fasc. 4, 125. Ash-trees, Airy- 
holme Wood, abundant ; Esk banks, near Whitby. 
Lecidea eleochroma, Ach. E. Bot. 1450. On the smooth bark of 
trees, Airyholme Wood ; Cliffrigg; Ayton. 
Lecidea dubia, Turn. and Borr. E. Bot. 2347. On old wood, 
Baysdale ; on pine-trees, Kildale, near West House. 
Lecidea silacea, Ach. EK. Bot. 1118. On old walls, Ayton Moor ; 
walls near Castleton. 
Lecidea chalybea, Borr. E. Bot. Suppl. 2687, f. 2. On old tiles, 
Ayton. 
Lecidea confluens, Ach. ¥. Bot. 1964. On rocks and walls, Ayton 
Moor; Battersby Moor; near Whitby. 
Lecidea atro-alba, Ach., var. concentrica, Fries. E. Bot. 246. On 
rocks and stones, Ayton, Kildale Moor, &c. 
Lecidea geographica, Ach., var. spherica, Scher. Leight. fase. 3, 
93. On rocks, Cliffrigg and near Cook’s monument. 
Lecidea geographica, var. atro-virens, Scher. Leight. fasc. 4, 128. 
On rocks, Battersby Moor; Ingleby Greenhow ; Eston Moor. 
Lecidea insularis, Nyl. On rocks, top of Cliffrigg! “ On submit- 
ting a specimen of this species to the Rev. W. A. Leighton for exami- 
nation, he very kindly informed me that it was identical with a speci- 
men which he had received from Sweden.” 
Biatora rivulosa, Ach. E. Bot. 1737. Onrocks, Battersby Moor ; 
Lanbraugh Rigg. 
Biatora anomala, Ach. E. Bot. 2155. On the bark of old trees, 
Airyholme Wood ; Cliffrigg. 
Biatora icmadophila, Eh. E. Bot. 2, 872. Turfy places under 
the shade of heath, Ayton Moor; near Castleton. 
Biatora byssoides, L. Hook. Brit. Fl. 1. 187. On rocks and old 
walls, sometimes on the ground, Lanbraugh Rigg; Ayton Moor; Kil- 
dale. 
Beomcyes roseus, Pers. E. Bot. 374. Onheaths, upon the ground, 
Ayton Moor; Kildale Moor; near Danby Castle. 
Cladonia alcicornis, Scher. E. Bot. 1392. On mossy rocks, 
Larchbank ; near Ayton. 
Cladonia cervicornis, Scher. E. Bot. 2574. Moist rocks, How- 
den Gill; Castleton Moor; Baysdale. 
Cladonia ventricosa, Scher. E. Bot. 2362. On decayed stumps 
of old trees, Stogdale ; Sloethorn Park. 
Cladonia pyxidata, Scher. FE. Bot. 1393. On heaths and in 
woods, frequent; Ayton Moor, &c. 
