Description annual, frequently biennial herbaceous Plant, provided with abundant axonomorfa root and radículas. The leaves adopt different forms according to the variety, although usually they are round or circular, with the whole margin, of clear green color. The leaves are superposed more and more in tight layers, from the base to the extremity, to adopting a sheroidal external form. Often they are slightly lobadas. The leaves whole, next to the stem, are sésiles and amplexicaules. The inflorescencia is formed by an ear with numerous small heads. The flowers of the small heads are small and with lígulas of yellow color. The fruits aquenios are made oval that have as well of a face and a vilano formed by numerous hairs. It only grows in cultivated state. The subspontaneous units come from culture unit. It is collected in summer.
Used parts the leaves and the juice.
Composed chemical mineral Salts, vegetal vitamins, sugars, proteins.
Properties Tranquilizing, emollient, vitaminic.
Way of use Juice, pulp, fluid extract.
It notices the leaves are very tempting for the cockroaches. The seeds contain an eatable oil. In some regions, the dried and tanned leaves are smoked instead of the tobacco. From the resulting paste to crush the leaves, an extract less effective is obtained than the lactuario, that comes from the wild lettuce.