''Achnanthidium'' is a genus of

diatoms A diatom (Neo-Latin ''diatoma'') is any member of a large group comprising several Genus, genera of algae, specifically microalgae, found in the oceans, waterways and soils of the world. Living diatoms make up a significant portion of Earth's B ...

belonging to the family

Achnanthidiaceae Achnanthidiaceae is a family of diatoms in the order Achnanthales. It contains 461 species within 22 genera. Genera The following genera are accepted within Achnanthidiaceae according to AlgaeBase. * '' Achnanthidium'' * '' Astartiella'' * ' ...

. The genus was described in 1844 by

Friedrich Traugott Kützing Friedrich Traugott Kützing (8 December 1807 in Ritteburg – 9 September 1893) was a German pharmacist, botanist and phycologist. Despite his limited background in regard to higher education, Kützing made significant scientific contribution ...

. The genus has

cosmopolitan distribution In biogeography, a cosmopolitan distribution is the range of a taxon that extends across most or all of the surface of the Earth, in appropriate habitats; most cosmopolitan species are known to be highly adaptable to a range of climatic and en ...

. Species: (see a more complete list) * '' Achnanthidium affine'' (Grunow) Czarnecki, 1994 * '' Achnanthidium agardhii'' (Kützing) Mereschkowsky * '' Achnanthidium alpestre'' (R. Lowe & J.P. Kociolek) R. Lowe & J.P. Kociolek * '' Achnanthidium minutissimum'' (Kützing) Czarnecki Achnanthidium minutissimum (Kützing) Czarnecki
from Phycology Section of the Academy of Natural Sciences of Drexel University, last access 8/24/2022

References

Achnanthales Diatom genera {{Diatom-stub