Ludwig Karl Georg Pfeiffer, also known as Louis Pfeiffer, was a German physician, botanist and conchologist.
Chaetoceros is a genus of diatoms in the family Chaetocerotaceae, first described by the German naturalist C. G. Ehrenberg in 1844. Species of this genus are mostly found in marine habitats, but a few species exist in freshwater. It is arguably the common and most diverse genus of marine planktonic diatoms, with over 200 accepted species. It is the type genus of its family.
Craticula is a genus of diatom that lies on or in the top layers of sediments in the freshwater to brackish water environments it inhabits. In addition to frustule morphology the genus differs from closely related species by its sexual reproduction and movement in response to light.
General of the Infantry is a former rank of the German army. It is currently an appointment or position given to an OF-8 rank officer, who is responsible for particular affairs of training and equipment of the Bundeswehr infantry.
Amphora is a major genus of marine and freshwater diatoms. With over 1000 species, it is one of the largest genera of diatoms. These diatoms are recognized by their strongly dorsiventral frustules, which means that their ridges lie close to the ventral margin of the valve, and their girdle is much wider on the dorsal side.
Cymatosira is a genus of diatoms in the family Cymatosiraceae. It is the type genus of its family.
Dictyota is a genus of brown seaweed in the family Dictyotaceae. Species are predominantly found in tropical and subtropical seas, and are known to contain numerous chemicals (diterpenes) which have potential medicinal value. As at the end of 2017, some 237 different diterpenes had been identified from across the genus.
Diploneis is a genus of diatoms belonging to the family Diploneidaceae.
Gomphonema is a genus of diatoms belonging to the family Gomphonemataceae.
Stauroneis is a genus of diatoms (Bacillariophyta) with species that occur in fresh and marine water.
