Claytonia perfoliata

Tracheophyta MagnoliopsidaPortulacaceaeClaytoniaClaytonia perfoliata

Ecology

An annual of open, sandy, disturbed ground, occurring as a weed in farmland and in gardens, and also under light shade, such as Breckland pine-belts. It is absent from wet and ill-drained soils and from limestone. Lowland.

Status

Neophyte

World Distribution

Native of western N. America; widely naturalised in N.W. Europe.

Broad Habitats

Light (Ellenberg): 6

Moisture (Ellenberg): 6

Reaction (Ellenberg): 5

Nitrogen (Ellenberg): 5

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.6

July Mean Temperature (Celsius): 15.6

Annual Precipitation (mm): 768

Height (cm): 30

Perennation - primary

Annual

Life Form - primary

Therophyte (annual land plant)

Woodiness

Herbaceous

Clonality - primary

Little or no vegetative spread

Count of 10km squares in Great Britain: 704

Count of 10km squares in Ireland: 6

Count of 10km squares in the Channel Isles: 10

Atlas Change Index: 0.5

Weighted Changed Factor: 7

Weighted Change Factor Confidence (90%)

38

JNCC Designations

NBNSYS0000003079

Atlas text references

Atlas (80b)
Hultén E
1968.  Flora of Alaska and neighboring territories.
Jalas & Suominen (1980)