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

Polysiphonia fibrata (Dillwyn) Harvey

Botany

Taxonomy

Polysiphonia 12

Specimens registered in collections

Collection Number of specimens (or sets)
Cryptogams (PC) 12

Polysiphonia fibrata Harv.

Botany

Taxonomy

Polysiphonia 3

Specimens registered in collections

Collection Number of specimens (or sets)
Cryptogams (PC) 3

Polysiphonia fibrata sensu Yendo

Botany

Polysiphonia fibrata (Dillwyn) Harvey

Zoology

Taxonomy

Polysiphonia 21

Specimens registered in collections

Collection Number of specimens (or sets)
Marine Laboratory of Concarneau (CO) 21