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 Nyssa sylvatica Nyssa sylvatica, commonly known as Tupelo, Black gum, sour gum, is a medium-sized deciduous tree native to eastern North America from the coastal Northeast USA and southern Ontario south to central Florida and eastern Texas, as well as Mexico. "Nyssa sylvatica"'s genus name "(Nyssa)" refers to a Greek water nymph; the species epithet "sylvatica" refers to its woodland habitat. The species' common name tupelo is of Native American origin, coming from the Creek words "ito" ‘tree’ and "opilwa" ‘swamp’; it was in use by the mid-18th century While these trees are often known as simply "tupelo", the fuller