Achillea ptarmica

Tracheophyta MagnoliopsidaAsteraceaeAchilleaAchillea ptarmica

Ecology

A perennial herb of damp or wet habitats on a wide range of soils, including fen- and water-meadows, rush-pasture, marshes, streamsides, wet heath, springs and flushes on hill slopes and occasionally in wet woodland. It is also established from cultivation in churchyards, and on roadsides and waste ground. 0-770 m (Cross Fell, Cumberland).

Status

Native

World Distribution

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

© S. Hammonds

Broad Habitats

Fen, marsh and swamp (not wooded)

Light (Ellenberg): 7

Moisture (Ellenberg): 7

Reaction (Ellenberg): 5

Nitrogen (Ellenberg): 3

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.3

July Mean Temperature (Celsius): 14.3

Annual Precipitation (mm): 1146

Height (cm): 60

Perennation - primary

Perennial

Life Form - primary

Hemicryptophyte

Woodiness

Herbaceous

Clonality - primary

Rhizome shortly creeping

Comment on Clonality

may be widely spreading; it is regarded as inconveniently invasive by gardeners

Count of 10km squares in Great Britain: 2382

Count of 10km squares in Ireland: 492

Count of 10km squares in the Channel Isles: 0

Atlas Change Index: -0.65

Weighted Changed Factor: -11

Weighted Change Factor Confidence (90%)

17

JNCC Designations

NBNSYS0000004453