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
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.
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).