Description: Plant with rizoma horizontal, great, very graft, from that they leave turgid and smooth stems, ensiformes, turgid leaves. The flowers are yellow, with perianto variable. Lacinias oval, with internal the narrowest ones than estambres. The capsule contains grayish seeds, trígonos, finished in end. Common in encharcados places, next to water obstacles, in the level one. It reaches a height of more of a meter. It is collected in spring.
Note: It does not have to abuse the prepared ones with false steel, since they can cause vomits and intense diarreas. The dust of rizoma has been used like sneezing in the resfriados ones of head. The toasted seeds have been used like sucedáneo of the coffee.