![](http://www.umbc.edu/cazabon/chicago/sites/uncultchicago11.07.31_0674.jpg)
7/31/2011 +
Box Elder | Acer negundo (ash-leaved maple, Manitoba maple, maple ash, black ash, sugar ash)
Riverbank Grape |Vitis riparia (frost grape, wild grape)
Spiny Sowthistle | Sonchus asper (prickly sowthistle, sharp-fringed sow thistle, spiny-leaf sow-thistle)
![](http://www.umbc.edu/cazabon/chicago/map/uncultchicago11.07.31_0674.jpg)
click to access interactive map
SITES
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