The common toadflax is a yellow-flowering plant native to Europe, Siberia and Central Asia. It usually grows alongside roads and on disturbed and cultivated land. The yellow flowers have a similar appearance to the snapdragon and grow up to 25-33 mm (0.98-1.30 in). The petals are a pale yellow colour with an orange tip. The stems grow to anywhere between 15 and 90 cm (6-35 in) and produce fine green leaves.

Bumblebees are attracted to common toadflax flowers, which tend to bloom from mid-summer to mid-autumn. The bees are essential for pollination and the plant is a food source for several insects, including moths and butterflies.

Due to its ability to grow between cracks, on cultivated land and in man-made habitats, toadflax is often considered a weed. Yet, the plant has proved useful in folk medicine, serving as a laxative and diuretic when used in tea, and providing relief from piles when made into an ointment.

The scientific name for common toadflax is 'Linaria vulgaris', which translates as a common ('vulgaris') plant resembling flax ('linaria').

More Info: en.wikipedia.org