Arboretum Zürich to the ground. Inside the group of trees are also powerful green-leaved trees, but also the purple "Fagus sylvatica f. purpurea", and the outer ends form narrow-leaved Beeches. In the summer when the trees are in full leaf, they form a 'tree cathedral', in those shadows reigns a soothing coolness and soft twilight. Since 2006 an open gap in the middle of the group, as the central Beech unfortunately had to be cut. The death of the otherwise durable Beech is also a result of poor soil conditions, which occur on the artificial lake shore bed. Just steps away, there
Hylorina sylvatica Hylorina sylvatica Hylorina sylvatica (also known as the Emerald forest frog, or in Spanish, sapo arboreo) is a species of frog in the family Batrachylidae. It is monotypic within the genus Hylorina. It is found in Argentina and Chile. This species is endemic to the austral "Nothofagus" forests of Chile and Argentina with a narrow distribution along the eastern slopes of the Andes. Male "Hylorina sylvatica" grow to snout-vent length of and females to . They are emerald-green during the day while they turn dark green at night. Adults can be found in permanent and temporary pools, swamps, and marshes.