ACOTYLEDONS. — LICHENS. Leccmova. 5 I 



20. L. crassa, crust scaly greenish, lobes imbricated inciso- 

 creuate waved irregular, disk of the apothecia slightly swelling 

 brownish orange margin thin entire at length obliterated. 



. jich. Syn. Lkli.p.VJX. Lichen c7-ass7is, E. B. t.\S93. Lic/i. 



cartila^inais, Light/, p. 815. 

 Hab. Rocks thinlv covered with earth, not unfrequent, as in the 

 King's Park, Edinb., Lighrf. 



21. L. candelaria, crust scaly yellow, lobes very much crowded 

 cut and laciniated imbricated their margins minutely granular, 

 apothecia nearly of the same colour as the crust margin ele- 

 vated entire. Light/, p. i92. Lichen candelarius, E. D. 

 t. 1794. 



/3. pnlycarpa, crust formed of lobes with many crowded teeth 

 and segments grevish yellow, apothecia crowded waved, disk 

 plane dilated of the same colour as the crust at length fulvous 

 and the margin crenulated. Lichen polycarpiis, E. B. 1. 1795. 



Hah Old posts and doors, occasionally, Hopk. /3. with a. 



This plant derives its name from the circumstance of the Swedes em- 

 ploying it to stain the candles that are used in their religious 

 ceremonies. 



22. L. hypnomm, crust scaly greenish brown, lobes minute 

 somewhat rounded with the margin granular and crenulated, 

 apothecia submembranaceous, the disk concave at length di- 

 lated plane reddish brown the margin elevated indexed crenate. 

 ylch. Syn. Lich. p. 193. Lichen hypnomm, E. B. I. 740. 



Hab. Rosslyn wood, Maugh. 



23. L. carnosa, crust scaly lividbrown, lobes irregularly and deeply 

 cut and laciniated, apothecia thick with the disk plane reddish 

 brow'u at length elevated and obliterating the entire margin. 

 Ach. Syn. Lich. p. 193 (L. musconnn). Lichen camosns, 

 E. B. t. 1684. 



Hab. Wet rocks among moss, not uncommon in the Highlands. 



24. L. hriinnea, crust imbricated lobed and granulated ash- 

 coloured brown, apothecia imbedded in the crust crowded 

 irregular, disk rather convex red-brown the margin elevated 

 crenulated persistent. Ach. Syn. Lich. p. \93. Lichen brun- 

 jmis, E. B.t. 1246. 



Hab. Discovered in Britain, by Dr. Burgess, in Dumfries-shire, and 

 Dr. Hamilton (late Buchnnan) near Stirling. Not uncommon on 

 the ground in heathy places. Pentland hills, Maugh. 



25. L. Hookeri, cniHt imbricated greyish, lobes minute appress- 

 ed blunt, di.sk of the apothecia plane black margin elevated 

 and crenate. Ach. MSS. (according to Swartz). Liche7i 

 Hookeri, E. B. t. 2283. Lichen leucolepis, Wahl. Lapp, 

 p. 420. Lecanora leucolepis^ Ach. Syn. Lich. p. 194. 



Hab. On wet micaceous rocks of Mael Greadha and Ben Lawera^, 

 Mr, Borrer and Hook. 



[d2] 



