Distribution: West of the Cascades in Washington near Seattle and Bellingham; British Columbia south to California; Gulf Coast and northeastern U.S.
Habitat: Weed in disturbed areas.
Conservation Status: Not of concern
Annual herb with stems square in cross section and branching below.
Opposite, sessile or short petiolate.
Pink, small; in axillary clusters along stem.
4 small nutlets.
This species is not listed for Washington by most sources. It has recently been found fairly well established in several locations in the Puget Trough and should be expected to turn up again.