A perennial herb of S.- or S.W.-facing Carboniferous limestone sea-cliffs, in rock crevices, on cliff ledges and in open turf on heavily grazed cliff-slopes, often where there is a thin veneer of blown sand. L. procerum subsp. cambrense is a frequent associate. Lowland.
L. parvum was described as a separate species in 1986, since when several new populations have been located within a few kilometres of the original site.
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Light (Ellenberg): 9
Moisture (Ellenberg): 3
Reaction (Ellenberg): 8
Nitrogen (Ellenberg): 3
Salt Tolerance (Ellenberg): 4
January Mean Temperature (Celsius): 5.9
July Mean Temperature (Celsius): 15.8
Annual Precipitation (mm): 939
Height (cm): 7
Perennation - primary
Life Form - primary
Clonality - primary
Count of 10km squares in Great Britain: 1
Count of 10km squares in Ireland: 0
Count of 10km squares in the Channel Isles: 0
Plantatt Conservation Status
RDB Species Accounts
Limonium parvum Ingrouille (Plumbaginaceae)
Rock sea-lavender, Corlafant Penfro
Status in Britain: VULNERABLE. ENDEMIC.
One of the more easily distinguished members of the Limonium binervosum aggregate, L. parvum has a compact growth form, with tight 'cushions' of basal leaves, and dense flower spikes on very short, usually unbranched stems less than 7 cm high. The species is described from a single population at Saddle Point, Pembrokeshire (Ingrouille & Stace 1986). It occurs on Carboniferous limestone in rock crevices, and on heavily rabbit-grazed steep rocky cliff-slopes with a southerly or south-westerly aspect. Associates include Armeria maritima, Cochlearia danica, Crithmum maritimum, Festuca rubra, Limonium procerum ssp. cambrense, Plantago coronopus and Spergularia rupicola.
In 1993, three further populations of L. parvum were found between Flimston and Stackpole Head. The species may in fact be widely scattered on limestone sea-cliffs between Linney Head and Stackpole Quay. All known populations lie within SSSIs, two of which are in NNRs. Old records of Limonium transwallianum from this area are probably referable to L. parvum or to L. procerum ssp. cambrense.
S. J. Leach