Phytophthora kernovii*, a new species of Phytophthora, has been detected on rhododendrons, beech and native English Oak (Quercus robur) trees in Cornwall England. This new species is related to P. ramorum, the causal agent of Sudden Oak Death, which has previously been detected in over 370 nursery and garden sites in England and Wales. However studies show P. kernovii may be more aggressive and faster spreading than P. ramorum. Defra and the Forestry Commission will continue to assess this new species and devise additional eradication strategies commensurate with this new threat.
*formal name has not yet been approved; pathogen also informally called Phytophthora taxon C
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Info from the Forestry Commission (UK)