American water-horehound, common water-horehound
[Lycopus americanus var. longii Muhl. ex W.P.C.Barton, more...]
Etymology: Lycopus: from Greek lukos, "wolf," and pous, "foot"
Plants: erect, perennial, 4"-40" tall aromatic forb; stems square; long rhizomes without tubers
Leaves: opposite, usually with glandular dots, long and tapering to a short stalk, deep, coarse, irregular teeth
Flowers: white, 4-lobed with the upper lobe wider and notched, tiny, 2 stamens slightly longer than the petals; inflorescence tight, small, whorled clusters from the leaf axils
Fruits: 1-seeded nutlet,
Conservation Status: Native
Floristic Rating: Coefficient of Conservatism = 4, Wetland Indicator = OBL USDA Plants Database: Federal Distribution and detailed information including photos University of Wisconsin - Green Bay: Wetland Plants: Photos, descriptions, information USGS - Northern Prairie Wildlife Research Center: Wetland Plants and Plant Communities of Minnesota and Wisconsin USDA Agricultural Research Service (ARS): Images of seeds, fruits, embryos, etc. Dan Tenaglia's The Missouri Flora: Fabulous photographs; detailed descriptions; color and leave arrangement key. David G. Smith's "Delaware Wilflowers": Beautiful photographs; descriptions Illinois Wildflowers: Wonderful photographs; detailed descriptions; color and leaf arrangement key Southwest School of Botanical Medicine: Britton & Brown Illustrated Flora - 2nd Edition (1913) "An Illustrated Flora of the Northern United States and Canada"