3*9 
APPENDIX TO CHAPTER XVII. 
Marcliantia (no fruit). 
Grimmia ......... 
Dicranum......... 
Thuidium .... t ... . 
Physcia flavicans (Sw.) 
,, speciosa (Wulf.). 
Parmelia perlata (L.). 
J J Sp» •••*•' o' • O' S 
Usnea sp. (The “ orchilla-weed ” of commerce). 
Most abundant, from 5000 to 
12,000 ft. 
10,000 ft. 
10,000 ft. 
14,300 ft. 
12,000 ft. 
