Ranunculus bulbosus
Ecology
A perennial herb with a corm-like stem-base, found on well-drained, neutral or calcareous soils in meadows, pastures and dunes. It is absent from highly productive, fertile grassland and from strongly acidic soils. Generally lowland, but reaching 580 m on Dartmoor (S. Devon) and at Hartside (Westmorland).
Status
Trends
R. bulbosus has maintained its range, and can be locally abundant. The map suggests a slight decline towards its northern and western limits, but the species is most readily recorded up to early summer and may have been overlooked in some areas.
World Distribution
European Southern-temperate element; widely naturalised outside its native range.
Broad Habitats
Light (Ellenberg): 7
Moisture (Ellenberg): 4
Reaction (Ellenberg): 7
Nitrogen (Ellenberg): 4
Salt Tolerance (Ellenberg): 0
January Mean Temperature (Celsius): 3.6
July Mean Temperature (Celsius): 14.8
Annual Precipitation (mm): 1004
Height (cm): 40
Perennation - primary
Life Form - primary
Woodiness
Clonality - primary
Count of 10km squares in Great Britain: 2259
Count of 10km squares in Ireland: 616
Count of 10km squares in the Channel Isles: 14
Atlas Change Index: -0.48
Weighted Changed Factor: 19
Weighted Change Factor Confidence (90%)
JNCC Designations
Atlas text references
Atlas (20c)
.
1988. Comparative Plant Ecology.
.
1957. Biological Flora of the British Isles. No. 61. Ranunculus acris L. (pp. 289-314), Ranunculus repens L. (pp. 314-325), Ranunculus bulbosus L. (pp. 325-342). Journal of Ecology. 45:289-342.
.
1986. Atlas of north European vascular plants north of the Tropic of Cancer. 3 vols.
Jalas & Suominen (1989)
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1965. Vergleichende Chorologie der zentraleuropäischen Flora. Volume 1. 2 vols.