Erect herb. Leaves in pairs on either side of stem, 5
or more times longer than wide. Flowers pink to purple,
flat-topped, but with the five petals united at the base to form
a slender tube. Blooms in late spring.
Plant of open places. Common on the eastern slope of
the Park, especially along the edge of the woods under the power
line along Wildwood Drive.
Easily identified. At first glance might be mistaken
for Dame's rocket (Hesperis
matronalis), but that plant has four petals, and leaves that
are toothed and not opposite each other.