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Noxious Weeds


Dalmatian toadflax (Linaria dalmatica (L.) Mill.)

Figwort family (Scrophulariaceae) 

Photo of Dalmatian toadflax

 

GROWTH HABIT:
Dalmatian toadflax is a perennial from southeastern Europe that is probably an escaped ornamental. It grows up to 3 feet ( 0.9) tall and reproduces by seed and underground roots.
LEAVES: The egg-shaped leaves are dense and grow alternately along the stem. They have a smooth edge (entire), are waxy gray-green and they clasp to the stem. The upper leaves are conspicuously broad-based.
FLOWERS:
Flowers are borne in axils of upper leaves and are 2-lipped, 3/4 to 1 1/2 inches (1 to 4 cm) long. They have a long spur, are yellow with an orange, bearded throat, and are showy. 
SEEDS:
The fruit is a 2-celled capsule about 1/4 inch (5 to 6 mm) long with many, irregularly-angled, black seeds.
OTHER:
Dalmatian toadflax is aggressive and may be found along roadsides and on wildlands where it crowds out desirable forage.. The extensive, deep root system along with the waxy leaves which repel pesticides, make this an extremely difficult plant to control.
KEY CHARACTERS:
  • Early spring growth of this prolific perennial has waxy leaves with a blue-green color. Leaves individually clasp the stem.
  • Yellow flowers with long spurs appear in mid-summer with plants continuing to flower until early fall.
Distribution:Sunny Slopes, used as ornamental - Mono County