This group has not been placed at any particular taxonomic rank.

In biology, a tribe is a taxonomic rank between family and genus.

The name Tremandreae is still sometimes used for this group, but at the taxonomic rank of tribe.

These groups are informal and are not understood to have any particular taxonomic rank.

Hooker did not use the modern system of suffixes for taxonomic ranks.

The order was proposed in 1977 to recognize the family Hymenochaetaceae at a higher taxonomic rank.

Diels' taxonomic rank for the species is still supported by some.

Ecotypes have no main taxonomic rank in modern biological classification.

Examples of taxonomic ranks are species, genus, family, and class.

There may be several different variations, which have at times been given separate taxonomic rank.