Biddulphiaceae
Biddulphiaceae is a family of diatom, the only family in the order Biddulphiales. The Biddulphiaceae are distinguished from the Eupodiscaceae by their pseudocelli, where the Eupodiscaceae have fully developed ocelli. Both families commonly inhabit the littoral zone of the ocean, close to the shore. Sixteen species of Biddulphiaceae are found on the west coast of India. Genera *† ''Alveoflexus'' - N.I. Hendey & P.A. Sims, 1984 *† ''Ancoropsis'' - N.I. Hendey & P.A. Sims, 1984 *''Arcusidiscus'' - S.Komura, 2008 *''Biddulphia'' - S.F. Gray, 1821 *''Biddulphiopsis'' - H.A. von Stosch & R. Simonsen, 1984 *† ''Donskinica'' - Strelnikova & Kozyrenko *† ''Euodiella'' - P.A. Sims, 2000 *† ''Fenneria'' - J.Witkowski, 2018 *''Hydrosera'' - G.C. Wallich, 1858 *''Isthmia (genus), Isthmia'' - Carl Adolph Agardh, C. A. Agardh, 1832 *† ''Medlinia'' - P.A. Sims, 1998 *''Neohuttonia'' - O. Kuntze, 1898 *''Pseudotriceratium'' - A. Grunow, 1884 *''Stoermeria'' - J.P. Kociolek, L. Esc ...
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Taxa Described In 1844
In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were set forth in Carl Linnaeus's system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the intr ...
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Diatom Families
A diatom (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 comprising several genera of algae, specifically microalgae, found in the oceans, waterways and soils of the world. Living diatoms make up a significant portion of the Earth's biomass: they generate about 20 to 50 percent of the oxygen produced on the planet each year, take in over 6.7 billion metric tons of silicon each year from the waters in which they live, and constitute nearly half of the organic material found in the oceans. The shells of dead diatoms can reach as much as a half-mile (800 m) deep on the ocean floor, and the entire Amazon basin is fertilized annually by 27 million tons of diatom shell dust transported by transatlantic winds from the African Sahara, much of it from the Bodélé Depression, which was once made up of a system of fres ...
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Terpsinoë
''Terpsinoë'' is a genus of diatom A diatom (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 comprising sev .... Species include '' T. americana'', '' T. javanicum'', and '' T. musica''. References * Further reading * * Diatom genera Taxa described in 1843 Taxa named by Christian Gottfried Ehrenberg {{Diatom-stub ...
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Carl Adolph Agardh
Carl Adolph Agardh (23 January 1785 in Båstad, Sweden – 28 January 1859 in Karlstad) was a Swedish botanist specializing in algae, who was eventually appointed bishop of Karlstad. Biography In 1807 he was appointed teacher of mathematics at Lund University, in 1812 appointed professor of botany and natural sciences, and was elected a member of the Royal Swedish Academy of Sciences in 1817, and of the Swedish Academy in 1831. He was ordained a clergyman in 1816, received two parishes as prebend, and was a representative in the clerical chamber of the Swedish Parliament on several occasions from 1817. He was rector magnificus of Lund University 1819-1820 and was appointed bishop of Karlstad in 1835, where he remained until his death. He was the father of Jacob Georg Agardh, also a botanist. System of plant classification The ''Classes Plantarum'' has nine primary divisions into which his classes and natural orders are grouped. These are, with class numbers; # Acotyledon ...
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Isthmia (genus)
Isthmia may refer to: * Isthmia (sanctuary) at the east side of the Isthmus of Corinth, Greece :* The ancient Isthmian Games, held at the sanctuary :* Temple of Isthmia, located in the sanctuary * Isthmia, Corinthia, a village in the municipal unit Loutraki-Perachora, Corinthia, Greece, near ancient Isthmia * ''Isthmia'' (genus), a genus of diatom in the Coscinodiscophyceae The Coscinodiscophyceae are a class of diatoms. They are similar to the Centrales, a traditional, paraphyletic subdivision of the heterokont algae known as diatoms. The order is named for the shape of the cell walls (or valves or frustules) of ...