Abstract
Most modern authorities have considered Euphorbia hyberna to be native in Britain but with the possibility that it could have been introduced from Ireland. The results from a literature survey, on the historical occurrence of the species, strongly suggest that it was introduced and has become naturalised at a few locations in south-west England.
Highlights
The Irish Spurge (Euphorbia hyberna L.) is an extremely rare plant in England with only recent occurrences for west Cornwall, north Devon and south Somerset (Stace, 2010) extinct in the last vice-county (Crouch, 2014)
The earliest records for the three vice-counties contained in the Botanical Society of Britain and Ireland (BSBI) Database (DDb) are: v.c
The Irish Spurge was known to these early botanists as Tithymalus hibernicus, e.g. William Howe (1620–1656) in his anonymous catalogue Phytologia Britannica (Anonymous 1650), but was assigned to Euphorbia hyberna by Linnaeus (Linnæus, 1753) who gave its habitats as Ireland, Siberia, Austria and the Pyrenees
Summary
The Irish Spurge (Euphorbia hyberna L.) is an extremely rare plant in England with only recent occurrences for west Cornwall, north Devon and south Somerset (Stace, 2010) extinct in the last vice-county (Crouch, 2014). Introduction The Irish Spurge (Euphorbia hyberna L.) is an extremely rare plant in England with only recent occurrences for west Cornwall, north Devon and south Somerset (Stace, 2010) extinct in the last vice-county (Crouch, 2014).
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