Trifolium dubium
Tracheophyta
›Magnoliopsida›Fabaceae›Trifolium›Trifolium dubium
Ecology
A winter-annual of hay meadows, waysides and waste places, and also frequent in lawns. Like T. campestre, it is most frequent in dry grasslands, but can be abundant too in winter-flooded meadows and damp pastures, and can thrive even in fairly nutrient-enriched situations. It also occurs in open habitats such as on rock outcrops, quarry spoil and railway ballast. Generally lowland, but reaching 530 m at Garrigill (Cumberland).
Status
Native
Trends
There is no change in the distribution of T. dubium.
World Distribution
European Temperate element; widely naturalised outside its native range.
© Shannon, P
vc20, St Albans
© Shannon, P
Broad Habitats
Neutral grassland (includes coarse Arrhenatherum grassland)
Light (Ellenberg): 7
Moisture (Ellenberg): 4
Reaction (Ellenberg): 6
Nitrogen (Ellenberg): 5
Salt Tolerance (Ellenberg): 0
January Mean Temperature (Celsius): 3.6
July Mean Temperature (Celsius): 14.6
Annual Precipitation (mm): 1072
Height (cm): 15
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: 2548
Count of 10km squares in Ireland: 942
Count of 10km squares in the Channel Isles: 14
Atlas Change Index: -0.11
Weighted Changed Factor: 30
Weighted Change Factor Confidence (90%)
20
JNCC Designations
NBNSYS0000003252
Atlas text references
Atlas (109b)
.
1988. Comparative Plant Ecology.
.
1986. Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.