Several names share this combination and are defined under the rules of the botanical code. The species name Ceramium byssoides might be an homonymy case.
The name Ceramium byssoides is a slight homonymy case. This name is used according to the rules of several different nomenclatural codes.

Ceramium byssoides DC.

Botany

Ceramium byssoides (Good. & Woodw.) Ducluz.

Zoology

Ceramium byssoides DC.

Zoology