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NC Native Plant Society:
Plant Details

Nuttallanthus canadensis [=Linaria canadensis]

Canada Toadflax, Common Toadflax, Blue Toadflax,

Scientific Name:

Nuttallanthus canadensis [=Linaria canadensis]

Genus:

Nuttallanthus

Species Epithet:

canadensis

Common Name:

Canada Toadflax, Common Toadflax, Blue Toadflax,

Plant Type

Herb/Wildflower

Life Cycle

Annual (Herbs Only)

Plant Family

Plantaginaceae (Plantain Family)

Native/Alien:

NC Native

Invasive Status:

(*Key)

Size:

0-1 ft., 1-3 ft.

Bloom Color(s):

Blue

Light:

Sun - 6 or more hours of sun per day

Soil Moisture:

Dry, Moist

Bloom Time:

March, April, May, June, July, August

Growing Area:

Mountains, Piedmont, Coastal Plain

Habitat Description:

In a wide variety of natural and disturbed habitats, especially common and weedy in disturbed sites such as roadsides and fields, also common and apparently native in thin soil of rock outcrops. Rare in NC mountains, common elsewhere in the state.

Leaf Arrangement:

Alternate

Leaf Retention:

Deciduous

Leaf Type:

Leaves veined, not needle-like or scale-like

Leaf Form:

Simple

Life Cycle:

Annual (Herbs Only)

Wildlife Value:

Has some wildlife value

Landscape Value:

Not Assigned

Global Rank:

G5 - Secure (*Key)

State Status:

(*Key)

Notes:

Best in meadows or natural areas. Though long known as Linaria canadensis, it was transferred to the genus Nuttallanthus -- as N. canadensis -- by some references. Weakley (2018) retains it in Linaria.

Slender stems with small linear leaves

Orange County, NC

Bettina Darveaux

Close-up of flower showing white centers, lip extending past upper petals, and presence of a narrow spur

Orange County, NC

Bettina Darveaux

Links:

USDA PLANTS Database Record



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