Elecampane n. : A large, coarse herb (Inula Helenium), with composite yellow flowers. The root, which has a pungent taste, is used as a tonic, and was formerly of much repute as a stomachic.

Elecampane n. : A sweetmeat made from the root of the plant.

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Taxonomy
Elecampane, Inula helenium, unranked, free encyclopedia, ireland, search, Kingdom, Family, Tribe, Genus, Species, Horse, ranges, eastwards, the Himalayas, herb, stem, Medical use.

Defination from the web:
Elecampane, also called Horse-heal (Inula helenium) or Marchalan (in Welsh), is a perennial composite plant common in many parts of Great Britain, ... John Gerard recommended elecampane for "the shortness of breath"; today herbalists prescribe it as an expectorant and for water retention; it ...