Found 2 items, similar to Inula helenium.
English → English (WordNet) Definition: Inula helenium Inula helenium n : tall coarse Eurasian herb having daisylike yellow flowers with narrow petals whose rhizomatous roots are used medicinally [syn: elecampane]
English → English (gcide) Definition: Inula helenium Helenin \Hel"e*nin\, n. (Chem.) A neutral organic substance found in the root of the elecampane (Inula helenium), and extracted as a white crystalline or oily material, with a slightly bitter taste. [1913 Webster]