Description: Turgid and graft, pubescente grass, with abundant thin root and radículas. Herbaceous stem of quadrangular section. The leaves are ovadas, teethed, opposed, pecioladas, of green color and dark tone, sometimes with jaspeados reddish. The color flowers purple densely are grouped in terminal ears. The chalice is pentomic-dentated, whereas the corola is bilabiada. The aquenios are truncated in the apex and are angular. This plant is distributed until average mountain in all Europe. The year is collected throughout. It measures on the average of 25 to 30 cm.
Information of interest: The plant enjoyed long ago a great reputation like natural remedy in the ocular hemorrhages, in coiris form. It has also been used in the rustic salads and menestras like salad. It agrees not to abuse his culinario use because of the presence of saponinas.