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American Germander, Wood Sage, Canada Germander - Teucrium canadense


Family: Lamiaceae - Mint family Genus Common Name: Germander Native Status: NativeDicot Perennial Herb
Teucrium canadense - American Germander, Wood Sage, Canada Germander. While there may be as many as 250 species of Germander in the world, only eight are found in North America, with just five of those being native to the continent. The non-native species have limited distribution, as do four of the native species. American Germander - Teucrium canadense, however, is widely distributed on the continent, being found in each of the lower 48 states as well as most of Canada. This is indicative of its weedy nature, and it is considered invasive by some weed authorities.

Found in:
AL, AR, AZ, CA, CO, CT, DC, DE, FL, GA, IA, ID, IL, IN, KS, KY, LA, MA, MD, ME, MI, MN, MO, MS, MT, NC, ND, NE, NH, NJ, NM, NV, NY, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VA, VT, WA, WI, WV, WY

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Teucrium canadense

Distribution of Teucrium canadense in the United States and Canada:
USDA Plants Distribution Map temporarily unavailable.
Blue=Native; Grey=Introduced

Map from USDA Plants Database:
USDA, NRCS. 2017. The PLANTS Database (http://plants.usda.gov, 23 Sep 2017). National Plant Data Team, Greensboro, NC 27401-4901 USA.

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Site: Cosby Campground, GSMNP, Cocke County, TN Date: 2014-June-30Photographer: Gerald C. Williamson
Nikon D7000
Tamron SP 90MM f/2.8 AF Macro
The inflorescence of Teucrium canadense is a terminal spike with many flowers. Each of the flowers is on a petiole and is subtended by a small leafy bract.
Teucrium canadense

Site: Cosby Campground, GSMNP, Cocke County, TN Date: 2014-June-30Photographer: Gerald C Williamson
Nikon D7000
The flowers of American Germander are irregular, with a two-lipped (bilabiate) corolla which is a pinkish-tinged white with pink to purple spotted markings on the lower lip. The upper lip are the two upright lobes with the tips nearly touching in this photo; the lower lip consists of the two small spreading lateral lobes and the huge hanging lowest lobe. The stamens and pistil are exserted from the upper lip.
Click on the photo for a larger image
Teucrium canadense

Site: Cosby Campground, GSMNP, Cocke County, TN Date: 2014-June-30Photographer: Gerald C Williamson
Nikon D7000
The lower surface of the corolla and other parts of the flower are covered with glandular hairs. It appears that the hairs on other parts of the plant, including the calyx, are not glandular.
Click on the photo for a larger image
Teucrium canadense

Site: Cosby Campground, GSMNP, Cocke County, TN Date: 2014-June-30Photographer: Gerald C Williamson
Nikon D7000
American Germander can grow to about 4 feet tall and is usually unbranching, but it may occasionally branch. The leaves are hairy, opposite, and up to about 5 inches long, held on petioles of about .5 inch.
Click on the photo for a larger image
Teucrium canadense

Site: Cosby Campground, GSMNP, Cocke County, TN Date: 2014-June-30Photographer: Gerald C Williamson
Nikon D7000
The stem of Teucrium canadense is square (it is Lamaceae, after all) and hairy.
Click on the photo for a larger image
Teucrium canadense

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All content except USDA Plants Database map Copyright Gerald C. Williamson 2017
Photographs Copyright owned by the named photographer