Plate 41 . 
r ' BlTfH< 
PERSIC AR1. 
Jf BLACK 
I Bindweed, 
jOLYgONUM' 
TYPROPIPER. 
COMMON 
KNOT-GRASS 
’ BISTORT 
POLYGON UM BIST ORTA. 
CQNVCLVUL'JS 
COMMON) | Ft'.RSICARlA 
P0LY60' !'JM PEP. SIC A 'l : 
