Naming''Linaria acutiloba'' Fisch. ex Rchb. is a synonym. Because this plant grows as a weed, it has acquired a large number of local colloquial names, including brideweed, bridewort, butter and eggs , butter haycocks, bread and butter, bunny haycocks, bunny mouths, calf's snout, Continental weed, dead men's bones, devil's flax, devil's flower, doggies, dragon bushes, eggs and bacon , eggs and butter, false flax, flaxweed, fluellen , gallweed, gallwort, impudent lawyer, Jacob's ladder , lion's mouth, monkey flower , North American ramsted, rabbit flower, rancid, ransted, snapdragon , wild flax, wild snapdragon, wild tobacco , yellow rod, yellow toadflax.
HabitatThe plant is widespread on ruderal spots, along roads, in dunes, and on disturbed and cultivated land.
Because the flower is largely closed by its underlip, pollination requires strong insects such as bees and bumblebees .
The plant is foodplant for a large number of insects such as the Sweet Gale Moth , Mouse Moth , Silver Y , ''Calophasia lunula'', Gorgone Checkerspot , Toadflax Pug , Satyr Pug , ''Falseuncaria ruficiliana'', Bog Fritillary , ''Pyrrhia umbra'', Brown Rustic , and ''Stenoptilia bipunctidactyla.
UsesWhile most commonly found as a weed, toadflax is sometimes cultivated for cut flowers, which are long-lasting in the vase. Like snapdragons , they are often grown in children's gardens for the "snapping" flowers which can be made to "talk" by squeezing them at the base of the corolla.
The plant requires ample drainage, but is otherwise adaptable to a variety of conditions. It has escaped from cultivation in North America where it is a common naturalised weed of roadsides and poor soils; it is listed as an invasive species in several U.S. states and Canadian provinces.
Despite its reputation as a weed, like the dandelion, this plant has also been used in folk medicine for a variety of ailments. A tea made from the leaves was taken as a laxative and strong diuretic as well as for jaundice, dropsy, and enteritis with drowsiness. For skin diseases and piles, either a leaf tea or an ointment made from the flowers was used. In addition, a tea made in milk instead of water has been used as an insecticide. It is confirmed to have diuretic and fever-reducing properties.
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