Rosa canina x obtusifolia (R. x dumetorum)
A deciduous shrub found in scrub, hedgerows, on road verges, tracksides and other open habitats. It is a fertile hybrid which usually occurs in areas where both parents are present, but is not uncommon in some areas when R. obtusifolia is rare or even absent. It grows mainly on calcareous soils. Lowland.
This common hybrid frequently backcrosses with its parents, often producing populations displaying a complete range of intermediates between the two species. Its distribution is now better known than when mapped by Graham & Primavesi (1993), but it remains under-recorded in many areas and is often mis-identified as R. obtusifolia or the pubescent form of R. canina.
Wider distribution uncertain.
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