Peter B wrote:
Where are yo? What is the environment like?

I am in western New York State, USA. These plants like to grow in moist
ditches by the roadside and in marshes. Here are two more pictures:

http://static.flickr.com/109/314522196_55441ed6a6_o.jpg
http://static.flickr.com/118/314522134_257508d513_o.jpg

Thank you,

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-Andy S.

http://www.flickr.com/photos/andy_s/sets/