inula

1:  the dried roots and rhizome of elecampane used as an aromatic stimulant and especially formerly as a remedy in pulmonary diseases—called also elecampane, elecampane root

2 capitalized :  a genus of Old World perennial herbaceous or rarely shrubby plants (family Compositae) having large yellow radiate heads and including the elecampane (I. helenium)

3:  any plant or root of the genus Inula