Phytophthora pseudosyringae composed only of cellulose and glucans. Its name derives from Greek "Phytophthora" (), “plant” and (), “destruction”; “the plant-destroyer” and "plurivora" and from Latin ( = many, - = feeding). Phytophthora pseudosyringae Phytophthora pseudosyringae is a semi-papillate homothallic soil-borne plant pathogen causing root and collar rot of deciduous tree species in Europe. It is associated with necrotic fine roots and stem necroses of "Fagus sylvatica" and "Alnus glutinosa", and isolates are moderately aggressive to fine roots of oaks and beech ("Nothofagus"), highly aggressive to holly leaves and apple fruits, and slightly pathogenic to alder bark. It belongs to the class
Nyssa sylvatica a large deep taproot when young that makes transplanting difficult. Because of this, it is fairly uncommon in cultivation and the nursery trade. Additional characteristics include: "Nyssa sylvatica" grows in various uplands and in alluvial stream bottoms from southwestern Maine and New York, to extreme southern Ontario, central Michigan, Illinois, and central Missouri, south to southern Florida, eastern Texas, and eastern Oklahoma. It also occurs locally in central and southern Mexico. Optimum development is made on lower slopes and terraces in the Southeastern United States. "Nyssa sylvatica" is found in a variety of upland and wetland habitats in its extensive