pink, purple, white
August - November
0.4 - 1.2
Has 4-angled stems with opposite linear leaves and purple, 5-parted flowers with sepal lobes only up to half as long as the tube, on peduncles less than 6 mm long.
Forage value is poor.
Moist sandy soil in bogs, seepage areas, moist prairies, open pinelands, barrens and along shores.