Rhododendron groenlandicum

Rhododendron groenlandicum (bog Labrador tea, formerly Ledum groenlandicum or Ledum latifolium), is a flowering shrub with white flowers and evergreen leaves that is used to make a herbal tea.

It is a low shrub growing to 50 centimetres (20 in) (rarely up to 2 metres (6 ft 7 in)) tall with evergreen leaves 20–60 millimetres (0.79–2.36 in) long and 3–15 millimetres (0.12–0.59 in) broad. The leaves are wrinkled on top, densely hairy white to red-brown underneath, and have a leathery texture, curling at the edges. The tiny white flowers grow in hemispherical clusters and are very fragrant and sticky.