Some cork is also produced in eastern LOCATION@1 from the related Chinese Cork Oak -LRB- Quercus variabilis -RRB- Pathogens Phytophthora ramorum -LRB- Sudden oak death -RRB- has reached LOCATION@2 and could pose a threat to the cork oak .

Some cork is also produced in eastern LOCATION@1 from the related Chinese PERSON@1 -LRB- Quercus variabilis -RRB- .
