Dalmatian toadflax

Linaria dalmatica (L.) P. Mill.

Description from Invasive.org

Appearance
Linaria dalmatica is a short-lived, perennial herb that can grow 3.9 ft. (1.2 m) tall. The overall form of the plant is narrow and upright, with multiple stems growing from a single woody base.
Foliage
Leaves are pale green, waxy, and heart-shaped, about 1-3 in. (2.5-7.6 cm) long in length, that clasp the stem at the base.
Flowers
Flowering occurs in May-September, when bright yellow, snapdragon-like flowers develop. Flowers, including the spur, are 1.4-2 in. (3.5-5 cm) long and occur in racemes at the apex of the stems.
Fruit
Fruits are capsules that are 0.1-0.3 in. (3-7 mm) long. Each capsule contains numerous small, black-brown, ridged seeds.
Ecological Threat
Linaria dalmatica occurs in fields, pastures, roadsides and rangelands. It is native to Europe and was introduced into North America, as an ornamental, in the late 1800s.

Resources

Selected Images from Invasive.org

View All Images at Invasive.org


Plant(s)
Bob Nowierski, Montana State University, Bugwood.org
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Infestation
Bob Nowierski, Montana State University, Bugwood.org
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Flower(s) flowering stem.
Joseph M. DiTomaso, University of California - Davis, Bugwood.org
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Flower(s)
Bob Nowierski, Montana State University, Bugwood.org
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Flower(s)
Bob Nowierski, Montana State University, Bugwood.org
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Seed(s) Seeds in various positions. Note honeycombed surface and ridged edges.
D. Walters and C. Southwick, USDA, Bugwood.org
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Seed(s) Ventral view of five seeds. Arrows point to flared hilum.
D. Walters and C. Southwick, USDA, Bugwood.org
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Foliage
Linda Wilson, University of Idaho, Bugwood.org
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Fruit(s)
Linda Wilson, University of Idaho, Bugwood.org
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Plant(s) Mature Dalmatian toadflax plant with vertical (flowering) and prostrate (nonflowering) stems.
Linda Wilson, University of Idaho, Bugwood.org
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Plant(s)
Utah State University , , Bugwood.org
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Flower(s)
Bonnie Million, Bureau of Land Management, Bugwood.org
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Infestation Mecinus East site BEFORE control Dufur, OR 2005
Eric Coombs, Oregon Department of Agriculture, Bugwood.org
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Distribution