810 
3. arguta Muhl, 
3. nemorails Alt. 
3. rugosa Mill. / . t/ ^ 
c<>"v^ ~' ^ ^ 
3. rug., va^. villosa (Pursh) Pernald 
yy^ -' 
3. rug., var. aspera (Ait.) Pernald 
3. rug,, var. spagnophila Graves. 
3. asperula Desf. 
v/.,. 
3. canadensl^ A, .'Tu^iJc! 
^UJ, %^4'’ v - 
u) H 
3. altissima L, 
3, lepida DC, 
3. lep., var, molina (Gaspe) 
