Valeriana officinalis

Tracheophyta MagnoliopsidaValerianaceaeValerianaValeriana officinalis

Ecology

A perennial herb found in a wide range of habitats. Subsp. sambucifolia occurs in damp grassland, marshes, fens, water margins and ditches, and wet woods throughout the country; subsp. collina in dry calcareous grasslands, hedge banks and woodland rides in S. and C. Britain. Lowland to 805 m on Mt Brandon (S. Kerry).

Status

Native

World Distribution

Eurasian Boreo-temperate element; widely naturalised outside its native range.

Broad Habitats

Fen, marsh and swamp (not wooded)

Light (Ellenberg): 6

Moisture (Ellenberg): 8

Reaction (Ellenberg): 6

Nitrogen (Ellenberg): 5

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.4

July Mean Temperature (Celsius): 14.5

Annual Precipitation (mm): 1115

Height (cm): 175

Perennation - primary

Perennial

Life Form - primary

Hemicryptophyte

Woodiness

Herbaceous

Clonality - primary

Little or no vegetative spread

Clonality - secondary

Rhizome shortly creeping

Comment on Clonality

"Some genotypes produce stolons, others do not (Sell); epigeal or hypogeal (CPE); rarely produces bulbils (CPE)"

Count of 10km squares in Great Britain: 2408

Count of 10km squares in Ireland: 808

Count of 10km squares in the Channel Isles: 0

Atlas Change Index: -0.64

Weighted Changed Factor: -7

Weighted Change Factor Confidence (90%)

13

JNCC Designations

NBNSYS0000004343