Page 
EFRRATA. 
49, fourteenth line from top, for ‘“‘tomentosa”’ read ‘‘ tomentella.’’ 
6, thirteenth and fourteenth lines from bottom, for ‘‘stricta’’ read 
‘‘arvensis.”’ 
99, fourth line from top, for ‘‘tomentulosa”’ read “ leucophylla.”’ 
154, eighth line from bottom, for “ Jimosa’”’ read ‘“‘ aquatilis.”’ 
215, kwelith line from bottom, le pegs * read: ‘ he nee 
335 and 335, for ‘‘ Pinus contorta ”’ read ‘ urrayana.,’”’ 
333, twenty-third line, for tO fs ica read ‘“‘N. Cali- 
for 
338, es ae dele Negundo Californicum. 
Seen a ee 
