Cupressus macrocarpa

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  • The Causal Agent Of Cypress Tree

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    Introduction Seiridium cardinale (Wagener) Sutton et Gibson has been wrecking havoc on populations of cypress (particularly Cupressus macrocarpa and C. sempervirens) since its discovery in California in 1927 and its spread to Europe shortly thereafter (Raddi and Panconesi 1981; Wagener 1928). In the 1920’s, disease symptoms in C. macrocarpa were originally attributed to insects (Wagener 1928). Wagener officially identified the causal agent as Coryneum cardinale in 1939, though Sutton and Gibson