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.
Fly-trap Dogbane: Bitter-root: Honey-bloom: Indian Hemp.
Apocynum androsaemifolium. Dogbane Family. June - Aug.
Found in open woods, roadsides. Northern Canada to Georgia, west to Nebraska.
Pink tinted, veined inside with deeper pink, bell-shaped with 5 spreading lobes, in loose clusters on the tips of the branches.
Opposite, toothless, short-stemmed. Plant stem branching, shrubby, 1 - 4 feet high.

Spreading Dogbane.
 
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