What's the difference between plumula and plumular?

Plumula

Definition:

• (n.) A plumule.
• (n.) A down feather.

Example Sentences:

• (1) Mycelium colonized also endosperm and embryo--both plumula and radicula.

Plumular

Definition:

• (a.) Relating to a plumule.

Example Sentences: