Native Plants to D.C.

http://www.wildflower.org/collections/collection.php?collection=DC
has over 100 recommendations for native plants

http://www.mdflora.org/chapters/washdc/dcchapter.html
A chapter that can help us figuring out which plants are good for our urban land?

http://www.nps.gov/plants/pubs/chesapeake/
US Fish&Wildlife Services (USFWS)'s guide of native plants for Chesapeake bay watershed area...
according to the brochure, Washington D.C. is considered "coastal plains"

If you can devise a list of most common native plants (such as Maryland's state flower, Brown-eyed Susan), go ahead so we can compare notes and figure out the best "attack"!