names of trees that lose their leaves in autumn
Deciduous In the fields of horticulture and botany, the term deciduous means "falling off at maturity"[1] and "tending to fall off"[2] in reference to trees and shrubs that seasonally shed leaves, usually in autumn; to the shedding of petals, after flowering; and to the shedding of ripe fruit.
Phloem In vascular plants, phloem is the living tissue that transports the soluble organic compounds made during photosynthesis and known as photosynthates, in particular the sugar sucrose,[1] to parts of the plant where needed. This transport process is called translocation.[2] In trees, the phloem is the innermost layer of the bark, hence the name, derived from the Greek word φλοιός (phloios) meaning "bark". The term was introduced by Nägeli in 1858.[3][4]