Foliage

Leaves, collectively, as produced or arranged by nature; leafage; as, a tree or forest of beautiful foliage.

A cluster of leaves, flowers, and branches; especially, the representation of leaves, flowers, and branches, in architecture, intended to ornament and enrich capitals, friezes, pediments, etc.

To adorn with foliage or the imitation of foliage; to form into the representation of leaves.

the main organ of photosynthesis and transpiration in higher plants

(architecture) leaf-like architectural ornament