72 
Owing to the unsettled state of the nomenclature, I have thought it 
necessary to refer the reader to works where they will find them either 
figured or described. 
Spherophoron coralloides, a. laxum, Turn. and Borr. E. Bot. 
115. Sandstone rocks on Ayton Moor, Kildale Moor, &c. 
Spherophoron coralloides, 8. cespitosum, Turn. and Borr. KE. 
Bot. 2474. Rocks at High Cliff; Guisbro’ Moor. 
Spherophoron compressum, Ach. E. Bot. 114. Sandstone rocks, 
Baysdale and Oggeray Gill. The pale and compressed thallus at 
once distinguishes this species from the two preceding. 
Eindocarpon smaragdulum, Ach. E. Bot. 1512. With us a very 
abundant species on sandstone rocks, old walls, &c. Ayton Moor; 
walls near Castleton. 
Endocarpon smaragdulum, Ach., var. rufo - virescens, Leight. 
Leight. Brit. Ang. Lich. plate 4, f. 4. On old walls near Roseberry ; 
walls near Egton. 
Sagedia viridula, Fries. HE. Bot. Suppl. after t. 2623, fig. 2. On 
brick walls, Ayton and Eston. 
Sagedia ochrostoma, Borr. MSS. Leight. Brit. Ang. Lich. p. 7, 
fig. 4. On the plastered walls of an old barn, Ayton. ; 
Sagedia aggregata, Fries. EK. Bot. 1752. On old ash-trees, Ayton; 
Newton Wood. 
Pertusaria communis, DC. E. Bot. 677. On old trees, Airy- 
holme Wood, Chiffrigg, &c. A very common species. 
Pertusaria fallax, Hook. E. Bot.1731. On ash-trees, Airyholme, 
rare. 
Thelotrema lepadinum, Ach. E. Bot. 678. On the bark of old 
trees, Hob-hole, near Castleton; Mulgrave woods, near Whitby ; 
Airyholme Wood. 
Verrucaria nitida, Ach., var. minor, Leight. Leight. fasc. 1, 28. 
On smooth bark of ash-trees, Airyholme Wood. 
Verrucaria biformis, Borr. E. Bot. Suppl. 2617, fig. 1. On the’ 
bark of oaks and ash-trees, Airyholme Wood; Cliffrigg ; Esk banks, 
near Kuswarp. 
Verrucaria rhyponta, Ach. E. Bot. 2597, fig. 2. On the smooth 
bark of young ash-trees, Airyholme Wood. 
Verrucaria cinerea, Pers. E. Bot. 1891. On holly-bark, Newton 
Wood, Easby Wood, and Baysdale. 
