foliaceous

[ foh-lee-ey-shuh s ]

/ ˌfoʊ liˈeɪ ʃəs /

of, like, or of the nature of a plant leaf; leaflike.

bearing leaves or leaflike parts.

pertaining to or consisting of leaves.

consisting of leaflike plates or laminae; foliated.

Origin of foliaceous

First recorded in 1650–60, foliaceous is from the Latin word foliāceus leafy, like a leaf. See folium, -aceous

fo·li·a·ceous·ness, noun su·per·fo·li·a·ceous, adjective

Body flattened, the two dorsal borders prominent and foliaceous.

Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 |Various
The books suggest that these foliaceous appendages are the organs of some special sense akin to touch.

Concerning Animals and Other Matters |E.H. Aitken, (AKA Edward Hamilton)
The varices are simple and not foliaceous as in M. rufus; the shell is more globose.

The Sea-beach at Ebb-tide |Augusta Foote Arnold
These latter organs may be absent or they may themselves be the subjects of foliaceous development.

Vegetable Teratology |Maxwell T. Masters

Foliaceous, belonging to, or of the texture or nature of, a leaf (folium).

The Elements of Botany |Asa Gray

foliaceous

/ (ˌfəʊlɪˈeɪʃəs) /

having the appearance of the leaf of a plant

bearing leaves or leaflike structures

geology (of certain rocks, esp schists) consisting of thin layers; foliated

C17: from Latin foliāceus