20 ON THE MEDICINAL AND TOXICOLOGICAL 



])lant is a monument of the credulity of man, inasmucli as some 

 tlionglit tliat it grew on tlie Imman liead, and they attril)uted to 

 it imaginary and superstitious virtues, under the name of Muscus 

 Cranii Ilumani, etc. It was i)rescribed, among some of the old 

 authors, to promote the growth of liair among the bald ; so, also, 

 I^snea plicatns was supposed to liave tlie same jiower. Macerated 

 in urine, it gives a red color ; in vitriol, a brown tint is added. It 

 is said that in Scotland more than two hundred persons are em- 

 ployed gathering it. Hoffman, de A'^ario Lichenum Usu, 27 ; 

 Diet, de Mat. Medicale, iv. 107. 



Parmdia omjModes AcK ) p^^ ^^^ ^.^^^ parmelia. 



Lichen " Linn. 



Used in dyeing. Lind., Kat. Syst. 



Parmelia rotimdatKS, Rottl. Tliis is employed in India as a 

 restorative in fatigue, and as a liniment for the head, Ainslie, M. 

 M. ii. 170 ; Merat & De Lens. iv. 107. 



/Stictafalighiosa, Ach. \ Sooty Sticta. On rocks and 

 Lichen fuUginosus, Dicks. ( trees, in subalpine countries. 

 This, and the S. Sylvatica, Ach. have a remarkably fetid 



smell, which has been compared to that of the urine of mice. 



C. Eng. 



,,, . , , . A 1 i Lunc;wort Sticta. Investing 



/Sticta pulmonaria. Ach. \ i " -? ^ o /-i tt -nr 



,.,-', .. T- - trunks ot trees, S. C, 11. W. 



Lichen mUmonartus, lAWW. j^ -x-r ,, i m / 



■^ ' I Iv. ; Isorthward, luck. 



A substitute for Cetraria islandica. Lind. 329. Also used 



in Siberia, for jaundice — for giving a bitter taste to beer. It dyes 



wool brown. 



ColUma nigrum, Ach. Inky Collema. 



Tlie genus Collema is gelatinous. Tliis species forms ink-like 

 stains upon the rocks on which it grows. 



Colleniafragraris, Acli. j Fragrant Collema. On trunks 

 LAchcn " E. Bot. ( of elms and ash. 



Tliis plant " is remarkable, when moistened, for its very sweet 

 aromatic scent, not unlike tlie sp. vol. aroinaticus of the apothe- 



