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Mountain avens (Dryas integrifolia, D. octopetala)
Also known as: arctic and alpine dryad, white mountain avens
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 & Fruit: White, saucer-shaped flowers are 2–3 cm wide, growing on stalks 2–15 cm tall.
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.
Sampling: Select a typical patch of plants, if the plants are very abundant, mark off a 1-metre-square section to observe.