Dalmatian toadflax USDA PLANTS Symbol: LIDA
U.S. Nativity: Exotic
Habit: Forbs/Herbs
Linaria dalmatica (L.) P. Mill.

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Taxonomic Rank: Magnoliopsida: Scrophulariales: Scrophulariaceae
Native Range: Italy to Russia (BAIL);

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.

Identification, Biology, Control and Management Resources

Selected Images from Invasive.orgView All Images at Invasive.org


Plant(s);
Utah State University , , Bugwood.org
Additional Resolutions & Image Usage

Foliage;
Linda Wilson, University of Idaho, Bugwood.org
Additional Resolutions & Image Usage

Feature(s); Possible hybrid toadflax plant (center) between yellow toadflax (left) and Dalmatian toadflax (right).
Elizabeth Goulet, Cornell University, Bugwood.org
Additional Resolutions & Image Usage

Seedling(s);
Linda Wilson, University of Idaho, Bugwood.org
Additional Resolutions & Image Usage

Plant(s); Mature Dalmatian toadflax plant with vertical (flowering) and prostrate (nonflowering) stems.
Linda Wilson, University of Idaho, Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
Bob Richard, USDA APHIS PPQ, Bugwood.org
Additional Resolutions & Image Usage

Infestation;
Steve Dewey, Utah State University, Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
Utah State University , , Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
Steve Dewey, Utah State University, Bugwood.org
Additional Resolutions & Image Usage

Feature(s); Nonflowering, prostrate Dalmatian toadflax shoots produced mid- to late summer.
Linda Wilson, University of Idaho, Bugwood.org
Additional Resolutions & Image Usage

Seed(s);
Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org
Additional Resolutions & Image Usage

EDDMapS Distribution:
This map is incomplete and is based only on current site and county level reports made by experts and records obtained from USDA Plants Database. For more information, visit www.eddmaps.org
 


State(s) Where Reported invasive.
Based on state level agency and organization lists of invasive plants from WeedUS database.

U.S. National Parks where reported invasive:
Dinosaur National Monument (Colorado)
Grand Canyon National Park (Arizona)



Invasive Listing Sources:
California Invasive Plant Council
Faith Campbell, 1998
Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995.
Native Plant Society of Oregon, 2008
Pacific Northwest Exotic Pest Plant Council, 1998