North Carolina Wildflowers, Shrubs, & Trees

by Jeffrey S. Pippen | Back to Jeff's Plant Page | Jeff's Nature Pages


Lamiaceae > Collinsonia (Horsebalm, Richweed, Stoneroot)

Collinsonia (Northern Horsebalm, Richweed, Stoneroot) Northern Horsebalm, Richweed, Stoneroot (Collinsonia canadensis)
Mt. Mitchell State Park, Yancey Co., NC
13 Sep 2008

Uncommon to fairly common in forested habitats with rich, often high pH soils.

Collinsonia (Northern Horsebalm, Richweed, Stoneroot) Northern Horsebalm, Richweed, Stoneroot (Collinsonia canadensis)
Mt. Mitchell State Park, Yancey Co., NC
13 Sep 2008

Odd looking flowers appear to mimic an insect or some other invertebrate.

Collinsonia (Northern Horsebalm, Richweed, Stoneroot) Northern Horsebalm, Richweed, Stoneroot (Collinsonia canadensis)
Mt. Mitchell State Park, Yancey Co., NC
13 Sep 2008

Collinsonia (Northern Horsebalm, Richweed, Stoneroot) Northern Horsebalm, Richweed, Stoneroot (Collinsonia canadensis)
Mt. Mitchell State Park, Yancey Co., NC
13 Sep 2008

Square, somewhat hairy stems and opposite leaves with many teeth.

Collinsonia (Northern Horsebalm, Richweed, Stoneroot) Northern Horsebalm, Richweed, Stoneroot (Collinsonia canadensis)
Mt. Mitchell State Park, Yancey Co., NC
13 Sep 2008



Annotated habitat and distribution information listed above is from Radford, Ahles, & Bell. 1968. Manual of the Vascular Flora of the Carolinas. UNC Press; and from personal observations and discussions with Will Cook, Harry LeGrand, and Bob Wilbur. Common names from personal experience and supplemented by the following resources USDA plants website, Flora of the Carolinas, Virginia, and Georgia, and NatureServe.


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Created on Feb 11, 2008 | jeffpippen9@gmail.com