OF TREES AND PLANTS. 279 



with a white circle round the edges. Our common people on 

 the waftes, who call it Cork, dye a fine red with it. They prepare 

 it by drying, powdering, and fleeping it in urine, as the French 

 do the Fertile. The Welch call it Caddlod and Ken Givi>:, and life 

 it. alfo in dying red, prepared after the fame manner. It is a 

 beautiful plant in its ftate of fructification. It was thought pecu- 

 liar to Wales, till Dr. Richardfon obferved it on the alpine York/hire 

 rocks- In the Flora Angelica, it is called the 



39. Crayji/h-eye-like, tinctorial, crujlaceous Lichen, or Stone-Mofs (r)\ 

 On moor-ftones, of the fine rag-kind, about Crag-JJ}eels, and Black-- 

 how-barn, i. e. the Black-hill-burn, near Wark, in Tynedalc. The 

 Stones are fo remarkably white with it, that they may be dif- 

 cerned at a confiderabk diftance, in all feafons of the year. The 

 dimes or fructifications are of the fame colour. The limb is con- 

 vex, yellow, and flefhy on being cut through. It is the Peri J !e 

 d 1 Alive rgnc, or Orfeille de Terre, of the French, in the province of 

 Auvergne, for ftriking a purple or red, known to them before the 

 difcovery of the Orchel, an extraneous lichen from trie recks of 

 the Archipelago, the GzHary-iflands, Cape-Verde, 8cc. to which it is 

 inferior in qxiality, but in more common ufe. They prepare it 

 with urine and lime. The Orchel is prepared with urine and pot- 

 am. It is a fcarce plant.. It is not in the Flora Angelica. 



40. Hard, -white, tinctorial, crujlaceous Lichen, or Stone-Mofs, 'with 

 black tubercles (s). On alpine rocks, frequent. On the rocks at 



(r) Mufcus cruftaceus fcutellaris leprofus cinereus. Psiiv. p. 79. Lichenoides crufta- 

 ceum & leprofum, fcutellare cinereum. Dill. Glfl'. p. 205. Raj. Syu. iii. p, 70. n. 42. 

 Lichen cruftaceus leprofus, fcutis cinereis. Valll. Bot. Paris, p. 116. n* 22. Lichenoides 

 Ifcprofum tinflorium, fcutellis lapidum cancri figura. Dillcn, Hift. Mufc. p. 130. t. 18. f. 10.' 



(s) Lichen leprofus candidus, tuberculis atris. Linn. Flo. Suec. n. 1058. Sp. Pf. 1140. 

 Lichenoides tartareum tinflorium candidum, tubercuiis atris. Dill. Hift. Mute. p. 1^8. 

 t. 18. f. 8. 



Ravetfs- 



