unifoliate

As adjectives the difference between trifoliate and unifoliate

is that trifoliate is having or comprising three leaves, leaflets, or (loosely) such similar structures, as the clover plant while unifoliate is having a single leaf.

In botany|lang=en terms the difference between leaf and unifoliate

is that leaf is (botany) a foliage leaf or any of the many and often considerably different structures it can specialise into while unifoliate is (botany) having a single leaf.

As a noun leaf

is the usually green and flat organ that represents the most prominent feature of most vegetative plants.

As a verb leaf

is to produce leaves; put forth foliage.

As an adjective unifoliate is

(botany) having a single leaf.