Lathyrus nissolia
Ecology
An inconspicuous annual of open, often disturbed, habitats on chalk and heavy calcareous clay soils. It is found on grassy banks, verges, railway banks, woodland rides, and coastal grassland and shingle. Lowland.
Status
Trends
There has been a considerable increase in 10-km square records since the 1962 Atlas, particularly in C.S. and S.E. England. Several recent county floras suggest that it is spreading in ruderal situations, and there are also records from restored open-cast mine sites where it may have been introduced as a constituent of commercial seed mixtures. It is unclear whether recent records in N.W. England are introductions or represent a northerly expansion of its native range.
World Distribution
European Temperate element.
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Broad Habitats
Light (Ellenberg): 8
Moisture (Ellenberg): 6
Reaction (Ellenberg): 7
Nitrogen (Ellenberg): 6
Salt Tolerance (Ellenberg): 0
January Mean Temperature (Celsius): 3.9
July Mean Temperature (Celsius): 16.3
Annual Precipitation (mm): 742
Height (cm): 75
Perennation - primary
Life Form - primary
Woodiness
Clonality - primary
Count of 10km squares in Great Britain: 567
Count of 10km squares in Ireland: 0
Count of 10km squares in the Channel Isles: 1
Atlas Change Index: 0.54
Weighted Changed Factor: 4
Weighted Change Factor Confidence (90%)
JNCC Designations
Atlas text references
Atlas (116d)
.
1964. Infraspecific variation in Lathyrus nissolia L. Watsonia. 6:28-35.
.
1965. Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.