This section is from the book "Harper's Guide To Wild Flowers", by Caroline A. Creevey. Also available from Amazon: Harper's Guide To Wild Flowers.
The stem is naked below except for a pair of small leaves, but bears, about the middle, leaves 2 to 4 inches long in 1 or 2 sets of fours; also, above, 1 or 2 pairs; all ovate or lance-shaped, thin, tapering, somewhat downy underneath, short-petioled. Stem, 3 to 5 feet high, stout, generally unbranched. The blossoms are a pale rose color, fading to almost white. May to July.
Dry woods and rocky hills from New Hampshire to Minnesota, southward to North Carolina and Arkansas.
 
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