Oxyria

Oxyria

 

a genus of plants of the Polygonaceae (buckwheat) family. They are perennial herbs with a creeping rhizome and radical kidney-shaped leaves on long petioles. The flowers are bisexual and in a panicle. The perianth is tetramerous; there are six stamens; the fruit is a pinnate nutlet. Two or three species are known in Eurasia and North America; they grow in the arctic zone and in the alpine belt of mountains, near brooks and springs, on shingle, and on rocky slopes. In the USSR mountain sorrel (O. digyna) grows in the tundra and mountains of Siberia and the Far East, while O. elatior grows in the Caucasus and Middle Asia. Oxyria leaves are acid to the taste and rich in vitamin C.

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For example, despite Geum reptans and Oxyria digyna being dormant (Table 1), they were both short-term persistent corroborating the claim that some dormant seeds are also short-lived in soil.
Bistorta vivipara, Carex atrata, Empetrum nigrum and Oxyria digyna were registered only on north facing slopes.
Positive versus negative interactions in a high alpine block field: germination of Oxyria digyna seeds in a Ranunculus glacialis community.
In order to determine whether the differences between treatments (warm/control) and habitat types observed in the previous experiment are due to phenotypic plasticity or evolutionary adaptation, I performed a reciprocal transplant experiment with three species that are abundant in the ITEX plots (forbs Oxyria digyna and Papaver radica-tum, and grass Arctagrostis latif blia).
Genera with fin-winged fruits in at least some of their species include Calligonum, Fagopyrum, Fallopia, Neomillspaughia, Oxygonum, Oxyria, Parapteropyrum, Podopterus, Polygonella, Pteropyrum, Pteroxygonum, Rheum, and Rumex.
Hoffman (1968, as cited in Elvebakk 1994) described an Oxyrio-Saxifragetum cernuae association from bird cliffs in eastern Svalbard, where Oxyria digyna, Saxifraga cernua, and Cochlearia officinialis were considered to be the species most favored by manuring.
Dryas integrifolia, Oxyria digyna, Salix reticulata, Saxifraga L.
Metabolic acclimation to temperature in arctic and alpine ecotypes of Oxyria digyna.
Vegetation here has an average height of 59 mm and includes Cassiope tetragona, Dryas integrifolia, Oxyria digyna, Pedicularis arctica, Saxifraga oppositifolia, and Salix arctica, as well as a variety of wet meadow grasses, sedges, mosses, and lichens.
Salix polaris, Dryas octopetala, Oxyria digyna, Saxifraga oppositifolia) are the most important foraging grounds (Van der Wal et al.
apetala, Bistorta vivipara, Salix arctica 3 Cryptogam-herb heath Alopecurus borealis, Poa abbreviata, Saxifraga cernua, Papaver dahlianum, Stellaria longipes, Oxyria digyna 4 Polar desert Pohlia drummondi (1)Nomenclature follows Porsild and Cody (1980) and Elven and Elvebakk (1996.