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Mountain Avens (Dryas integrifolia/octopetala)

flower/herb  tundra/barren (alpine areas)  
Also known as: arctic and alpine dryad, white mountain avens
Bloom time: June - July

General

  • These plants are ground-hugging, sun-loving, semi-shrubs.
  • Arctic mountain avens (Dryas integrifolia) leaves are 1-2 cm long, narrow with smooth edges and a somewhat shiny upper surface.
  • Alpine mountain avens (Dryas octopetala) leaves are longer (up to 3.5 cm) and wider, with scalloped or wavy edges.

    Leaves & Twigs

  • The small, leathery, evergreen leaves are wrinkled on the upper surface and hairy underneath.

    Flowers & Fruits

  • White, saucer-shaped flowers are 2-3 cm wide, growing on stalks 2-15 cm tall.
  • Seed plumes are twisted in tight red/gold bundles that open into fluffy round seed heads as they mature.

    Habitat

  • These species prefer rocky barren areas, alpine meadows and ridges. Arctic mountain avens can also tolerate moist conditions, where it takes on a creeping form.

    PlantWatch Pointers

  • Select a typical patch of plants, if the plants are very abundant, mark off a l-metre-square section to observe.

    To Observe

  • First bloom: when the first flowers are open in the observed plants.
  • Mid bloom: when 50% of the flowers are open in the observed plants.
  • Dryas integrifolia/octopetala
    Additional photos:
    1. Dryas integrifolia/octopetala first bloom
      credit: Linda Kershaw

    Distribution map
    Distribution Map

    PlantWatch Pete says ... This floral emblem for the Northwest Territories was important for the Inuit — the twisting of the mountain avens seed head marked the best time to move inland to hunt caribou.

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