Fagus sylvatica trees are older than 350 years in Izvoarele Nerei and even 500 years in Uholka-Shyrokyi Luh. Spring leaf budding by the European beech is triggered by a combination of day length and temperature. Bud break each year is from the middle of April to the beginning of May, often with remarkable precision (within a few days). It is more precise in the north of its range than the south, and at than at sea level. The European beech invests significantly in summer and autumn for the following spring. Conditions in summer, particularly good rainfall, determine the number of leaves included
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