Plant is a creeping perennial herb with 4-angled stems
up to 3 feet long, bearing short, upright branches. Its preferred
habitat is damp sandy soil, sloughs, pond margins, ditches, and
low pine lands. Distribution is throughout the region.
The leaves are spatulate or oblanceolate, with an obtuse
to rounded apex; slightly toothed along the margin, usually on
the upper portion of the leaf.
The flowers are small, white or lavender in color, and
borne in dense heads that are held erect above the leaves. The
flowers on the outside of the head bloom first, those toward
the center later; pccurring in the summer.
Fruit is a capsule.
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