Oxyria digyna

Tracheophyta MagnoliopsidaPolygonaceaeOxyriaOxyria digyna

Ecology

A tufted perennial herb of damp, ungrazed mountain ledges, wet, shaded gullies and the sides of gills and streams. In Scotland it sometimes descends to near sea level along streams, but usually occurs above 150 m, reaching 1190 m on Ben Lawers (Mid Perth).

Status

Native

World Distribution

Circumpolar Arctic-montane element.

© K.J. Walker, BSBI

Broad Habitats

Light (Ellenberg): 7

Moisture (Ellenberg): 6

Reaction (Ellenberg): 5

Nitrogen (Ellenberg): 3

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 1.7

July Mean Temperature (Celsius): 12.1

Annual Precipitation (mm): 1940

Height (cm): 30

Perennation - primary

Perennial

Life Form - primary

Hemicryptophyte

Woodiness

Herbaceous

Clonality - primary

Little or no vegetative spread

Count of 10km squares in Great Britain: 311

Count of 10km squares in Ireland: 24

Count of 10km squares in the Channel Isles: 0

Atlas Change Index: -0.71

Weighted Changed Factor: -18

Weighted Change Factor Confidence (90%)

25

JNCC Designations

NBNSYS0000003772