Crithmum maritimum

Tracheophyta MagnoliopsidaUmbelliferaeCrithmumCrithmum maritimum

Ecology

A fleshy perennial herb of spray-drenched rock crevices and ledges on sea-cliffs, coastal rocks and on stabilised shingle; also in maritime grassland and artificial habitats like harbour walls and stone sea defences. It appears indifferent to soil reaction, being found on many rock types from chalk and limestone to granite. Lowland.

Status

Native

World Distribution

Mediterranean-Atlantic element.

Broad Habitats

Supralittoral rock (does not include maritime grassland)

Light (Ellenberg): 9

Moisture (Ellenberg): 6

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 5

Salt Tolerance (Ellenberg): 5

January Mean Temperature (Celsius): 5.1

July Mean Temperature (Celsius): 15.4

Annual Precipitation (mm): 1042

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: 301

Count of 10km squares in Ireland: 138

Count of 10km squares in the Channel Isles: 14

Atlas Change Index: 0.23

JNCC Designations

NBNSYS0000003687