1. Of or pertaining to or resembling the leaf of a plant
   "The foliaceous structure of the seaweed made it look like underwater vegetation"
    
2. Bearing numerous leaves
   "The foliaceous shrub provided ample shade in the garden";
   - foliose, foliaged
    
3. (especially of metamorphic rock) having thin leaflike layers or strata
   "The foliaceous texture of the mineral";
   - foliate, foliated

See also: bedded, leafy, stratified