Arcade

arcade
A series of arches with columns or piers; in gardens, usually having trees forming the arched ceiling.
GardenWeb Glossary of Botanical Terms
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arcade literally, a series of arches; in gardening, often a straight, tree-lined walkway, the trees forming the arched ceiling.

arboretum - A garden with a large collection of trees and shrubs cultivated
for scientific or educational purposes.
arcade - a series of arches; in gardening, often a straight, tree-lined walkway, the trees forming the arched ceiling.

patioPatio is a Spanish word for an arcaded or colonaded courtyard. It is now applied to any small paved area in a garden.

See also: Water, High, Genera, Level, Spring