The name Tetrahymena is a slight homonymy case. This name is used according to the rules of several different nomenclatural codes.

Tetrahymena

Botany

Taxonomy

Ciliophora 4

Specimens registered in collections

Collection Number of specimens (or sets)
Unicellular eukaryotes (CEU) 4

Tetrahymena

Zoology

Taxonomy

Ciliophora 7

Specimens registered in collections

Collection Number of specimens (or sets)
Protists (IR) 7