Prasiola is a genus of fresh water and marine green algae. Each individual plant is small but they usually grow side by side to form a green turf on rock surfaces. The genus has a cosmopolitan distribution.
Ryan Stewart Theriot is an American former professional baseball shortstop and second baseman. He played in Major League Baseball (MLB) for the Chicago Cubs, Los Angeles Dodgers, St. Louis Cardinals, and San Francisco Giants.
Stephanosphaera is a genus of green algae in the family Haematococcaceae, containing the single species Stephanosphaera pluvialis. It forms colonies of flagellated cells. Although it was once placed in the family Volvocaceae, it is not closely related to them; its sister is the unicellular genus Balticola.
Xanthidium is a genus of green algae, specifically of the Desmidiaceae.
Chaetocerotaceae is a diatom family (Bacillariophyta). This family comprise the three genera Attheya T. West, Bacteriastrum Shadbolt and Chaetoceros Ehrenberg. Chaetoceros is perhaps the largest and most species rich genus of marine planktonic diatoms. The taxonomic status within Chaetocerotaceae at present is somewhat unclear.
Chaetoceros is probably the largest genus of marine planktonic diatoms with approximately 400 species described, although many of these descriptions are no longer valid. It is often very difficult to distinguish between different Chaetoceros species. Several attempts have been made to restructure this large genus into subgenera and this work is still in progress. However, most of the effort to describe species has been focused in boreal areas, and the genus is cosmopolitan, so there are probably many tropical species still undescribed. Some species are known from the fossil record, from the Quaternary of Sweden. It is the type genus of its family.
The Naviculales are an order of diatoms.
Plagioselmis is a genus of cryptophytes, including the species Plagioselmis punctata.
Eugene F. Stoermer was a leading researcher in diatoms, with a special emphasis on freshwater species of the North American Great Lakes. He was a professor of biology at the University of Michigan School of Natural Resources and Environment.
Eunotiaceae is a family of diatoms in the order Eunotiales that includes the following genera:
Biddulphiaceae is a family of diatom 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.
Marie Hypolite Irénée Thériot, credited as Irénée Thériot was a French bryologist and school teacher.
Luticola is a genus of marine diatoms.
Diatoms belong to a large group called the heterokonts, which include both autotrophs such as golden algae and kelp; and heterotrophs such as water moulds. The classification of heterokonts is still unsettled: they may be designated a division, phylum, kingdom, or something intermediate to those. Consequently, diatoms are ranked anywhere from a class, usually called Diatomophyceae or Bacillariophyceae, to a division (=phylum), usually called Bacillariophyta, with corresponding changes in the ranks of their subgroups.
Achnanthidium is a genus of diatoms belonging to the family Achnanthidiaceae.
Aneumastus is a genus of diatom belonging to the family Mastogloiaceae.
Aulacoseira is a genus of diatoms belonging to the family Aulacoseiraceae.
Spicaticribra is a genus of diatoms belonging to the family Stephanodiscaceae.
Epithemia is a genus of diatoms belonging to the family Rhopalodiaceae.
Gomphonema is a genus of diatoms belonging to the family Gomphonemataceae.
