''Achnanthes'' is a genus of

diatoms A diatom (New Latin, Neo-Latin ''diatoma''), "a cutting through, a severance", from el, διάτομος, diátomos, "cut in half, divided equally" from el, διατέμνω, diatémno, "to cut in twain". is any member of a large group com ...

belonging to the family Achnanthaceae. The genus was described in 1822 by

Jean Baptiste Bory de Saint-Vincent Jean-Baptiste Geneviève Marcellin Bory de Saint-Vincent was a French naturalist, officer and politician. He was born on 6 July 1778 in Agen (Lot-et-Garonne) and died on 22 December 1846 in Paris. Biologist and geographer, he was particularly in ...

. The genus has

cosmopolitan distribution In biogeography, cosmopolitan distribution is the term for the range of a taxon that extends across all or most of the world in appropriate habitats. Such a taxon, usually a species, is said to exhibit cosmopolitanism or cosmopolitism. The ext ...

. Species: * '' Achnanthes aapajaervensis'' Cleve-Euler * '' Achnanthes abundans'' Manguin, 1954 * '' Achnanthes acares'' Hohn & Hellerman * '' Achnanthes acus'' Simonsen * '' Achnanthes acuta'' Frenguelli

References

{{Taxonbar, from=Q340571 Achnanthales