Juglans nigra English or Persian walnut, but thrives best in the warmer regions of fertile, lowland soils with high water tables, although it will also grow in drier soils, but much more slowly. Some soils preferred by black walnut include Alfisol and Entisol soil types. Walnut grows best on sandy loam, loam, or silt loam type soils but will also grow well on silty clay loam soils. It prefers these soils because they hold large quantities of water which the tree draws from during dry periods. Visually, black walnut is similar to the butternut ("Juglans cinerea") in leaf shape, and the range
Pink-sided tree frog the Ecuadorian specimens have been heard calling from bushes overhanging a shallow pond in a banana grove at night (Duellman 2001). It deposits its eggs on the leaves floating on ponds, and larvae jump into the pond and develop in the water. Since it depends on the forest canopy, it is not very adaptable to disturbances. http://oldredlist.iucnredlist.org/details/55292/0 Pink-sided tree frog The pink-sided tree frog ("Agalychnis litodryas") is a species of frog in the family Hylidae. It is found in Ecuador, Panama, and possibly Colombia. Its natural habitats are subtropical or tropical moist lowland forests and rivers. It is threatened by