Brassica rapa

Tracheophyta MagnoliopsidaBrassicaceaeBrassicaBrassica rapa

Ecology

An annual or biennial herb, found as long-established populations on river and canal banks, and as a casual on roadsides, in arable fields and on tips. Lowland.

Status

Archaeophyte

World Distribution

A native of Eurasia; its precise native range is completely obscured by its spread in cultivation. It is also naturalised in Africa, N. & S. America and Australasia.

Broad Habitats

Arable and horticultural (includes orchards, excludes domestic gardens)

Light (Ellenberg): 7

Moisture (Ellenberg): 5

Reaction (Ellenberg): 7

Nitrogen (Ellenberg): 6

Salt Tolerance (Ellenberg): 0

January Mean Temperature (Celsius): 3.9

July Mean Temperature (Celsius): 15

Annual Precipitation (mm): 993

Height (cm): 100

Perennation - primary

Annual

Perennation - secondary

Biennial, including monocarpic perennials

Life Form - primary

Therophyte (annual land plant)

Life Form - secondary

Hemicryptophyte

Comment on Life Form

"Rich (1991) says ""annual or biennial"""

Woodiness

Herbaceous

Clonality - primary

Little or no vegetative spread

Count of 10km squares in Great Britain: 1407

Count of 10km squares in Ireland: 630

Count of 10km squares in the Channel Isles: 7

Atlas Change Index: 0.74

Weighted Changed Factor: 6

Weighted Change Factor Confidence (90%)

32

JNCC Designations

NBNSYS0000002802