Collinsonia canadensis L.  
Family: Lamiaceae
Canada horse-balm, northern horse-balm, richweed, stoneroot
Collinsonia canadensis image
Kitty Kohout  
Etymology: Collinsonia: for Peter Collinson, early English botanist
Plants: erect, perennial, 20"-40" tall, aromatic forb; stems square, branched above; from thick, woody rhizomes
Leaves: opposite, toothed, smooth, oblong, several pairs scattered on the stem
Flowers: yellow to white, 5-parted, 1/2" long, irregularly tube-shaped, lower lip fringed, 2 stamens; flower drawing; inflorescence branched spikes of paired flowers; blooms July-Sept.
Fruits: 1-seeded nutlet
Habitat: woods; in rich soil
Conservation Status: Endangered
Collinsonia canadensis image
Wisconsin Dept. of Natural Resources  
Collinsonia canadensis image
Emmet J. Judziewicz  
Collinsonia canadensis image
Marion Sheehan  
Collinsonia canadensis image
More Images    View Genus       View Specimen Records       Close window