The species is a species complex made up of a great many varying forms, sometimes considered varieties.

It is considered a species complex which includes Streptanthus brachiatus.

This species complex is equipped with powerful venom and will defend themselves if threatened or injured.

The plant belongs to a species complex containing at least 11 species.

It has been suggested that cryptic species complexes are very common in the marine environment.

This is generally considered a species complex made up of at least three subtaxa.

Some English names refer to species complexes within the group:

Each subgenus has been further divided into a number of species complexes.

Instead, when looking for genetic equilibrium, studies found large, wide-spread species complexes.

Taxonomic levels above species complex can be distinguished on morphological grounds.