Abstract
Summary A description is given of a blight of the foliage of several varieties of Dutch Iris which has occurred in the Isles of Scilly since 1928. The disease is associated with an unidentified Phytophthora which is possibly related to P. Cyperi-rotundati Sawada. Suggestions for control are based upon measures of plant sanitation. Grateful acknowledgements are made for financial assistance during the investigation from the Ministry of Agriculture and Fisheries, and from the Great Western Railway Company through the Cornwall Farmers' Union.
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