Barbarea intermedia
Tracheophyta
›Magnoliopsida›Cruciferae›Barbarea›Barbarea intermedia
Ecology
A biennial herb, rarely a perennial or an annual, found in a variety of waste and disturbed places, although it was formerly most frequent as an arable weed. Generally lowland, but occurring as a casual at 340 m N. of Alston (Cumberland).
Status
Neophyte
Trends
This species was first recorded in the wild before 1849, although it may have previously been confused with B. vulgaris. It has considerably increased since the 1962 Atlas, and may be seriously under-recorded in the Irish Republic.
World Distribution
Native of N.W. Africa and W. Europe from Spain to Denmark; naturalised north and east of its native range.
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Broad Habitats
Arable and horticultural (includes orchards, excludes domestic gardens)
Light (Ellenberg): 8
Moisture (Ellenberg): 5
Reaction (Ellenberg): 6
Nitrogen (Ellenberg): 7
Salt Tolerance (Ellenberg): 0
January Mean Temperature (Celsius): 3.7
July Mean Temperature (Celsius): 15
Annual Precipitation (mm): 975
Height (cm): 60
Perennation - primary
Biennial, including monocarpic perennials
Life Form - primary
Hemicryptophyte
Woodiness
Herbaceous
Clonality - primary
Little or no vegetative spread
Count of 10km squares in Great Britain: 735
Count of 10km squares in Ireland: 207
Count of 10km squares in the Channel Isles: 7
Atlas Change Index: 1.92
Weighted Changed Factor: 7
Weighted Change Factor Confidence (90%)
39
JNCC Designations
NHMSYS0100000754
Atlas text references
Atlas (46b)
.
1990. Flora dels Països Catalans, II. Crucíferes-Amarantàcies.
Jalas & Suominen (1994)
Rich (1987
1991)