dcsimg

Brief Summary

    Dryas integrifolia: Brief Summary
    provided by wikipedia

    Dryas integrifolia is a species of flowering plant in the rose family known by the common names entireleaf mountain-avens, white mountain-avens, northern white mountain avens, and mountain avens. It is native to northern parts of North America, where it occurs from Alaska across Canada to Greenland. It is a common species of the Arctic and it is probably the most common flowering plant on some of the western Arctic islands.

    This plant is a shrub, often a dwarf shrub. It forms a prostrate mat up to 10 to 17 centimeters tall, the stems branching horizontally along the ground. The leaves are borne on petioles that are covered in long, silky or woolly hairs. The leaf blades are linear to lance-shaped and measure up to 2.2 centimeters long. The blades have smooth upper surfaces and densely hairy undersides. The flowering stem has no leaves on it but is covered in long woolly hairs. It bears a single flower with up to 11 petals which are usually white but may be shades of yellow or cream. In the middle are many stamens tipped with yellow anthers. The styles start small and enlarge as the attached fruits mature, becoming up to 2.5 centimeters long and sporting a plumelike coat of long, fluffy hairs. These plumes tangle together, and clumps of fruits fall away from the plant to be borne away on the wind.

    Some flowers exhibit heliotropism, changing orientation to follow the sun. Others grow toward the position of the sun at noon. As the flower faces the sun it provides a resting spot for a variety of insects, being slightly warmer than surrounding surfaces.

    This species is actinorhizal, able to live in symbiosis with nitrogen-fixing bacteria. It can also form a symbiosis with the mushroom Hebeloma cylindrosporum via an ectomycorrhiza.

    This plant is common in many Arctic regions, growing in several types of cold, wet habitat. It can be found in tundra, meadows, river valleys, and scree slopes. It anchors well in rocky and gravelly substrates, and it thrives in soils with low organic content. It is a pioneer species in rough terrain. It likely colonized wide areas of the Arctic as ice sheets receded. This species dominates several Arctic habitat types, being the first plant to take hold in the scoured substrate and becoming the most abundant species in the area. It dominates a dwarf heath plant community along with sedges such as Carex rupestris in Montana. In parts of northern Alaska it codominates bare, cryoturbated soils with the lichen Ochrolechia frigida, and moist coastal flats with Carex aquatilis, a sedge.

    The plant's ability to colonize denuded Arctic landscapes makes it a useful tool in revegetation efforts, particularly in habitat altered by mining. Once the plant takes hold, its dense, matlike form tends to accumulate organic matter. Increasing the organic cover in a barren mining zone is considered an important goal in revegetation efforts.

    The Inuit have many names for the species, including malikkaat, isuqtannguat, isurramuat, and piluit. They monitored the status of the plant in order to track the seasons.

    Dryas integrifolia: Brief Summary ( French )
    provided by wikipedia Français
    Le feuillage est permanent formant un tapis de 3-8 cm de hauteur. Les fleurs crèment apparaissent en juin-juillet.
    Dryas integrifolia: Brief Summary ( Polish )
    provided by wikipedia POL

    Dryas integrifolia – gatunek roślin z rodziny różowatych. Pospolity gatunek arktyczny. Występuje w północnej części Ameryki Północnej, od Alaski, przez Kanadę po Grenlandię.

    Dryas integrifolia: Brief Summary ( Vietnamese )
    provided by wikipedia VI

    Dryas integrifolia là loài thực vật có hoa trong họ Hoa hồng. Loài này được Vahl mô tả khoa học đầu tiên năm 1798.

    Dryas integrifolia: Brief Summary ( i18n: No )
    provided by wikipedia Norwegian


    Dryas integrifolia er en eviggrønn dvergbusk i reinroseslekta.

    Den har en krypende vekst og blir 5–15 cm høy. Bladene er nesten helrandete, noe som skiller den fra de andre arktiske artene i reinroseslekta. Blomstene har 8–9 kronblad, som regel er de hvite, men de kan være gule. Blomstene er heliotropiske og følger sola når den beveger seg over himmelen. Griffelen faller ikke av, men utvikler seg til et fjærformet organ som hjelper frøet til å spre seg med vinden.

    Dryas integrifolia vokser på ganske fuktige steder med lite organisk materiale i jorda, som elvebredder, polygonmark og urer. I Nord-Amerika er den vanlig i alle arktiske områder fra Alaska til Grønland. Den vokser også på Vrangeløya og i Tsjukotka lengst øst i Sibir.

    민담자리꽃나무: Brief Summary ( Korean )
    provided by wikipedia 한국어 위키백과

    민담자리꽃나무(Dryas integrifolia)는 장미과에 포함된 속씨식물의 하나이다. 둥근잎담자리꽃나무 또는 흰담자리꽃나무, 북부담자리꽃나무, 담자리꽃나무라고도 부른다.

Comprehensive Description