Phytophthora cinnamomi (Rands) on Chamaecyparis lawsoniana (Parl.) and Taxus baccata (L.) . in Holland
Abs. in Tijdschr. PIZiekt 61(1): 17-18
In 1954 Chamaecyparis lawsoniana was found to be attacked by Phytophthora cinnamomi for the first time in Holland. Infection originates in the root system and thence spreads to the base of the stem, where a sharp line of demarcation is visible between the healthy and diseased tissue. The leaves turn pale and shrivel. In cool weather the root system may collapse entirely before the foliar symptoms appear.