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Dalmation Toadflax - Linaria dalmatica
Family: Scrophulaceae

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Description

This snapdragon has been called 'wild snapdragon' or 'butter and eggs'. It is a stout plant up to 1.2 meters tall. There are large yellow flowers on the ends of the stems. These flowers have a prominent spur projecting from the back of the petals.

Related species: Yellow toadflax looks very similar but is generaly smaller and has leaves that are narrow an lance-shapped that do not clasp the stem (like in dalmation toadflax).

Interesting facts

Dalmation toadflax is an invader native to the mediteranean region. Today it is mainly a problem in the northern and western states of the US. Toadflax had been used for centuries as a folk remedy and a dye.

Biological Control

A few different types of biocontrol have been used on both dalmation toadflax and yellow toadflax including a defoliating moth (Calophasia lunula), an ovary-feeding beetle, and two seed capsule-feeding weevils (Gymnaetron antirrhini and Gymnaetron netum).


VIDEO


Links to more information

Canadian Pest Management page - includes some great pictures of the plant.

THE overview of Dalmation Toadflax - from www.Mtweeed.org - a great review article talking about everything from ecology to history and biological control.


Website, video, and graphics by Rob Nelson
For more information on this plant or management please contact US Army Corp of Engineers

 

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