| Naviculales | |
|---|---|
 | |
| Navicula bullata | |
Scientific classification  | |
| Domain: | Eukaryota |
| Clade: | Diaphoretickes |
| Clade: | SAR |
| Clade: | Stramenopiles |
| Phylum: | Gyrista |
| Subphylum: | Ochrophytina |
| Class: | Bacillariophyceae |
| Subclass: | Bacillariophycidae |
| Superorder: | Bacillariophycanae |
| Order: | Naviculales Bessey, 1907 |
According to the GBIF, the order has the following families; [2]
There are 5 genera that are incertae sedis.
Figures in brackets are approx. how many species per genus. [2]
The Coscinodiscophyceae are a class(s) 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 of centric diatoms, which are circular or ellipsoid in valve view. The valves often bear radially symmetrical ornamental patterns that can appear as dots when viewed with an optical microscope. Some also bear spines on their valves, which may either increase cell surface area and reduce sinking, or act as a deterrent to zooplankton grazers. Unlike pennate diatoms, centric diatoms never have a raphe.
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.
Bacillariaceae is a family of diatoms, the only family in the order Bacillariales. Some species of genera such as Nitzchia are found in halophilic environments; for example, in the seasonally flooded Makgadikgadi Pans in Botswana.
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.
The Cymbellaceae are a diatom family in the order Cymbellales.
Eunotiaceae is a family of diatoms in the order Eunotiales that includes the following genera:
Navicula cari is a species of algae in the genus Navicula. Navicula cari occur in eutrophic waters.
Fragilaria gracilis is a species of freshwater pennate diatoms. F. gracilis is reported from many parts of Europe, in Sweden even as one of the dominant freshwater diatom taxa.
Achnanthidium is a genus of diatoms belonging to the family Achnanthidiaceae.
Adlafia is a genus of diatoms belonging to the family Anomoeoneidaceae.
Aneumastus is a genus of diatom belonging to the family Mastogloiaceae.
Chamaepinnularia is a genus of diatoms belonging to the family Naviculaceae.
Diploneis is a genus of diatoms belonging to the family Diploneidaceae.
Encyonema is a genus of diatoms belonging to the family Cymbellaceae.
Gomphonema is a genus of diatoms belonging to the family Gomphonemataceae.
Hippodonta is a genus of diatoms belonging to the family Naviculaceae.
Achnanthaceae is a family of algae belonging to the order Achnanthales.
Didymosphenia is a genus of diatoms belonging to the family Cymbellaceae.
Stauroneis is a genus of diatoms (Bacillariophyta) with species that occur in fresh and marine water.
Nupela is a genus of diatom. Species of Nupela typically measure less than 20 µm. The genus was first described as being isovalvar, however many recently described species are heterovalvar. The main diagnostic characteristic of the genus is the presence of an external covering over the areolae. The genus was circumscribed by Wim Vyverman and Pierre Compère in 1991, with Nupela giluwensis asigned as the type, and at that time, only species.
| Authority control databases: National |
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