Samolus valerandi

Tracheophyta MagnoliopsidaPrimulaceaeSamolusSamolus valerandi

Ecology

A deciduous short-lived perennial found in small colonies by permanently wet and often seasonally flooded springs, flushed sea-cliffs, puddles, ditches, lagoons and lake shores. It is limited to very open mesic, often calcareous or somewhat saline soils. Populations are often impermanent, colonising the small and transient specialised habitats which change as spring lines and water levels shift. Individuals are usually monocarpic, but may take several years to flower. Lowland.

Status

Native

World Distribution

Circumpolar Southern-temperate element.

Broad Habitats

Fen, marsh and swamp (not wooded)

Light (Ellenberg): 8

Moisture (Ellenberg): 8

Reaction (Ellenberg): 8

Nitrogen (Ellenberg): 5

Salt Tolerance (Ellenberg): 2

January Mean Temperature (Celsius): 4.3

July Mean Temperature (Celsius): 15.1

Annual Precipitation (mm): 1013

Height (cm): 45

Perennation - primary

Perennial

Life Form - primary

Hemicryptophyte

Woodiness

Herbaceous

Clonality - primary

Little or no vegetative spread

Count of 10km squares in Great Britain: 845

Count of 10km squares in Ireland: 411

Count of 10km squares in the Channel Isles: 12

Atlas Change Index: -0.42

Weighted Changed Factor: 24

Weighted Change Factor Confidence (90%)

37

JNCC Designations

NBNSYS0000003947