Title: Correspondence
Subjects: Plants, Fagaceae, Salicaceae, Environmental aspects, Loranthaceae, Identification, Cupressaceae, Taxaceae, Correspondence, Deforestation, Anacardiaceae, Magnoliaceae, Pinaceae, Juglandaceae, Trees, Crassulaceae, Ulmaceae, Personal Names, Forest influences, Forestry schools and education, Rhus, Vegetation and climate, Rosaceae
Places: America
People: George Engelmann (1809-1884), Wilhelm Olbers Focke (1834-1922), Emanuel Purkyně (1831-1882)