a.k.a. Labrador Tea or Greenland Moss Ledum groenlandicum/Rhododendron groenlandicum Family: Ericaceae Origin: Canada Plant description: Woody, perennial evergreen shrub growing up to 1-meter high, with leathery, under-folding leaves, hairy on the underside, and a single stalk atop with clusters of white flowers. Part of plant used for essential oil: Leaves Extraction method: Steam distilled Main Chemical Constituents: sabinene (15.7%), Terpinen-4-ol (7.6%), β-selinene (5.7%)