This section is from the book "Who's Who Among The Wild Flowers", by W. I. Beecroft. Also available from Amazon: A Field Guide to Edible Wild Plants.
Rampion, European, or Creeping Bellflower. Campanula rapunculoides.
Bluebell Family. July - Aug.
A sturdy plant 1 - 3 feet high, found along roadsides and in waste places. New Brunswick to Ontario, Pennsylvania and Ohio. Introduced from Europe and Asia. Escaped from gardens.
Purple-blue, bell-shaped, 5-lobed, hanging down mostly on one side of the stem.
Lower leaves arrowhead-shaped, with a heart-shaped base; upper leaves broad lance-shaped, short-stemmed, toothed.

Bellflower.
 
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