Above: American Water Horehound on the shore of Lake Wingra in Vilas Park in Madison, Wisconsin. (9/04/21).
American Water Horehound - Lycopus americanus
American Water Horehound is a native perennial plant that grows from 4" - 40" tall. American Water Horehound likes moist areas like lake shores.
American Water Horehound has small dense cluster of small white flowers that are about 1/8" wide. They are arranged in whorled clusters (similar to Field mint and Motherwort) from the leaf axils along the stem.
Blooms July - September.
Other Names: Common Water-horehound, American Bugleweed, Cut-leaved Bugleweed.
Above: American Water Horehound leaves are deeply lobed, 3 1/3" long and 1 1/2" wide". They become progressively smaller as they ascend the stem.
For more information on American Water Horehound, visit Wikipedia.
Or, visit the UW-Madison Wisconsin State Herbarium website page about American Water Horehound - Lycopus americanus.
American Water Horehound
Lycopus americanus
Above: American Water Horehound on the shore of Lake Wingra in Vilas Park in Madison, Wisconsin (9/111/21).
Above: American Water Horehound specimen collected near St. Croix Falls, Wisconsin on River Road on August 1, 1928.
Above: 1913 American Water Horehound illustration.