Yellow toadflax

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Yellow toadflax

Yellow toadflax leaves

Yellow toadflax

Yellow toadflax linflorescence

Morphology

Stem

Erect or ascending, 1 to several, simple to branched.

Leaves

Alternate or nearly opposite below, numerous, crowded, linear, 1 to 2 inches long, 1/12 to 1/4 inch wide, pale green, glabrous, narrowed to a stalk-like base.

Inflorescence

Raceme, congested, spike-like, terminal; bracts alternate, reduced.

Flower

Short-stalked, calyx deeply 5-parted; segments lanceolate, nearly equal; corolla .8 to 1.6 inch long including spur, 2-lipped, bright yellow with orange beard on lower lip at throat; upper lip 2-lobed, 1/3 to 1/2 inch long; lower lip 3-lobed, 1/4 to 1/3 inch long; stamens 4.

Fruit

Capsule, nearly spherical, 1/5 to 1/3 inch long, 2-celled; seeds numerous, disc-shaped with wings.

Ecology

Habitat

Open disturbed sites, roadsides, waste areas, and rangeland.

Distribution

Scattered throughout Kansas

Practical Information

Toxicity

Suspected to be mildly poisonous to livestock.

Additional Notes