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the fame author has obferved of a foliofe lichen be- 
longing to this order, that it will thrive on all kind 
of rocks but limeftone rocks. This fpecies (i) Dil- 
lenius calls The common grey-blue pitted lichenoides. 
It is very common with us upon trees, old wooden 
pales, &c. as well as upon rocks and ftones. It is 
the ujnea cranti humani of the old materia me die a. 
Linnaeus adds, that it will dye a purplifh colour. 
Hither likewife muft be referred the cork or arcel 
(2), which is ufed by the Scotch, and others, to 
dye a purple or fcarlet colour. The preparation of 
it is by powdering, and making it into a mafs with 
urine. Parkinfon tells us (3) the poor people in Der- 
bylhire ferape it from the rocks, and make the fame 
ufe of it. Mr. Ray (4) adds to this account, that 
the Welch, who call it kenkerig , have long been 
acquainted with this property, and have it in com- 
mon ufe. The colour from this mofs is but very 
dull ; but if the fame methods were taken to im- 
prove it, as have been with the orchel , it would 
undoubtedly be rendered much better, and more 
durable. Linnaeus relates (y), that there is an im- 
menfe quantity of this mofs about the rocks of the 
(1) Lichenoides vulgatijfimum cinereo-glaucum lacunofum et cirro- 
fam Hift. Mufc. p. 88. Lichenoides crujla foliofa fuperne cinereo- 
glauca, inferne nigra et cirrofa fcutellis nigricantibus. R. Syn. p. 72. 
(2) Lichenoides faxatile tinflorium foliis pilofis purpureis Rail 
Syn. p. 74. N°. 70. Hift. Mufc. p. 185. Lichen petraus purpureus 
Derbienfts Park. Theat. p. 1315. Lichen omphalodes Lin. Spec. 
PI. 1143. 
(3) Park. Theat. Botan. p. 1315. 
(4) Raii Hift. Plant, p. 116. 
(5) Flor. Lappon. p. 343. V. 
ifle 
