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

Callithamnion affine Harv.

Botany

Taxonomy

Algues 23
Callithamnion 23

Specimens registered in collections

Collection Number of specimens (or sets)
Cryptogams (PC) 23

Callithamnion affine Kütz.

Botany

Callithamnion affine Harv.

Zoology