Nuttallanthus canadensis
(Blue Toadflax)
Nuttallanthus canadensis, Lake Whitney State Park, Hill Co. 7969
Nuttallanthus canadensis, Lake Whitney State Park, Hill Co. 7981
Nuttallanthus canadensis, Lake Whitney State Park, Hill Co. 7980
Nuttallanthus canadensis, Lake Whitney State Park, Hill Co. 7962
Nuttallanthus canadensis, Lake Whitney State Park, Hill Co. 7988
Nuttallanthus canadensis, Lake Whitney State Park, Hill Co. 7966
Nuttallanthus canadensis, Lake Whitney State Park, Hill Co. 7963
| Scientific Name | Nuttallanthus canadensis (Linaria canadensis) | USDA PLANTS Symbol | NUCA |
| Common Name | Blue Toadflax, Old-field Toadflax | ITIS Taxonomic Serial No. | 503969 |
| Family | Plantaginaceae (Plantain) | SEINet Reference |
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| Description | Habitat: Sandy soils in fields, grassy areas, woodlands and distrurbed areas. Plant: Biennial or winter annual with smooth, slender, stems; flowering stem up to 28 inches tall with few branches; often with multiple flowerless, leafy, prostrate stems at the base. Leaves: Very narrow, smooth, dark green, linear blades, no petioles, up to about 1-1/4 inches long and 1/8-inch wide, becoming more sparse upward; alternate and narrower on flowering stems; leafier, opposite and broader on flower-less stems. Inflorescence: Racemes of violet/blue two-lipped flowers 3/8-inch long or less; upper lip smaller, two-lobed, lower lip much larger and three-lobed, with a 2-humped white spot at the base; slender, curved spur below, 1/16 to less than 1/4-inch long. Bloom period: February to May. References: "Manual of the Vascular Plants of Texas" by Correll and Johnston, "Wildflowers of Texas" by Michael Eason, Minnesota Wildflowers, Illinois Wildflowers and SEINet. Note: Very similar to N. texanus except this flower and spur are smaller. |
BONAP Distribution Map Map Color Key |
Texas Status: Native |
Banner photo of Castilleja indivisa and Lupinus ssp. taken along FM 1323 north of Johnson City, Blanco County
© Tom Lebsack 2024