Native & Naturalized Plants of the Carolinas & Georgia


841

Forb
Winter annual/Biennial

Native to the Carolinas & Georgia

Documented growing wild in GA NC SC

Common (rare in NC Mountains)

Look for it in a wide variety of natural and disturbed habitats, esp common and weedy in disturbed sites such as roadsides and fields, also common and apparently native in thin soil of rock outcrops, per Weakley's Flora

map
To see a detailed map, click here

 

full sun ...Variable

LEAVES:
Simple
Lvs of erect stems alternate, lvs of prostrate stems opposite (rarely whorled)

FLOWER:
Spring/Summer
Blue/Purple
Bisexual
Bilaterally symmetrical
5-parted calyx
2-lipped corolla
4 included stamens (2 long, 2 short)
Superior ovary
Inflorescence a raceme

FRUIT:
Spring/Summer/Fall
Capsule

 

TO LEARN MORE about this plant, look it up in a good book!



Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Asterids: Lamiids: Lamiales

WEAKLEY'S FLORA (2/8/20):
Linaria canadensis   FAMILY Plantaginaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Nuttallanthus canadensis   FAMILY Scrophulariaceae

INCLUDED WITHIN VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 166-16-001:
Linaria canadensis   FAMILY Scrophulariaceae

SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933)
Linaria canadensis var. canadensis

 

COMMON NAME:
Oldfield Toadflax, Common Toadflax, Canada Toadflax


Click or hover over the thumbnails to see larger pictures.

image of Linaria canadensis, Oldfield Toadflax, Common Toadflax, Canada Toadflax

JK Marlow    jkm080301_022b

March    Charleston County    SC

Santee Coastal Reserve

Erect stem leaves alternate & scattered, linear, 5-20mm long, 2-3mm wide, per Forest Plants of the Southeast and Their Wildlife Uses.

image of Linaria canadensis, Oldfield Toadflax, Common Toadflax, Canada Toadflax

JK Marlow    jkm080301_024b

March    Charleston County    SC

Santee Coastal Reserve

Spreading stems' leaves opposite or whorled, linear, 3-12mm long, per Forest Plants of the Southeast and Their Wildlife Uses.

image of Linaria canadensis, Oldfield Toadflax, Common Toadflax, Canada Toadflax

Gill Newberry    gn04_l_canadensis_clump

April        

image of Linaria canadensis, Oldfield Toadflax, Common Toadflax, Canada Toadflax

Gill Newberry    gn04_l_canadensis_nuttall

April        

image of Linaria canadensis, Oldfield Toadflax, Common Toadflax, Canada Toadflax

Gill Newberry    gn04_linaria_canadensis

April        

image of Linaria canadensis, Oldfield Toadflax, Common Toadflax, Canada Toadflax

JK Marlow    jkm0504b_11

April    Greenville County    SC

Field

Leaves hairless, per Forest Plants of the Southeast and Their Wildlife Uses.

image of Linaria canadensis, Oldfield Toadflax, Common Toadflax, Canada Toadflax

JK Marlow    jkm070428_002

April    Greenville County    SC

Field

Flowers crowded at the end and around a long stalk (raceme), per Forest Plants of the Southeast and Their Wildlife Uses.

image of Linaria canadensis, Oldfield Toadflax, Common Toadflax, Canada Toadflax

JK Marlow    jkm200422_4036

April    Greenville County    SC

image of Linaria canadensis, Oldfield Toadflax, Common Toadflax, Canada Toadflax

Roxanna Martin    rlm41911_77

April    Spartanburg County    SC

image of Linaria canadensis, Oldfield Toadflax, Common Toadflax, Canada Toadflax

Roxanna Martin    rlm4211_202

April    Spartanburg County    SC

A white form

image of Linaria canadensis, Oldfield Toadflax, Common Toadflax, Canada Toadflax

Roxanna Martin    rlm4211_210

April    Spartanburg County    SC

A conspicuous spur points down from the corolla, per Guide to the Wildflowers of SC.

image of Linaria canadensis, Oldfield Toadflax, Common Toadflax, Canada Toadflax

Roxanna Martin    rlm4211_213

April    Spartanburg County    SC

image of Linaria canadensis, Oldfield Toadflax, Common Toadflax, Canada Toadflax

Roxanna Martin    rlm4211_221

April    Spartanburg County    SC

Curved elongated spur projects downward through calyx; 5 lanceolate sepals, per Forest Plants of the Southeast and Their Wildlife Uses.

image of Linaria canadensis, Oldfield Toadflax, Common Toadflax, Canada Toadflax

Roxanna Martin    rlm4211_84

April    Spartanburg County    SC

Lower lip has a double-humped white palate & much exceeds the upper lip, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.

image of Linaria canadensis, Oldfield Toadflax, Common Toadflax, Canada Toadflax

Roxanna Martin    rlm4211_85

April    Spartanburg County    SC

image of Linaria canadensis, Oldfield Toadflax, Common Toadflax, Canada Toadflax

JK Marlow    s000416_b

April    Greenville County    SC

Roadside

image of Linaria canadensis, Oldfield Toadflax, Common Toadflax, Canada Toadflax

JK Marlow    jkm200516_4857

May    Pickens County    SC

Capsule subglobose, 2-3mm in diameter, per Vascular Flora of the Carolinas.