Cutleriales

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Cutleriales
Cutleria cylindrica - National Museum of Nature and Science, Tokyo - DSC07656.JPG
Cutleria cylindrica
Scientific classification
(unranked): SAR
Superphylum: Heterokonta
Class: Phaeophyceae
Order: Cutleriales
Bessey
Family: Cutleriaceae
Griffith & Henfrey
Genera

Cutleria Greville
Microzonia J Agardh
Zanardinia Zanardini

Cutleriales is an order in the brown algae (class Phaeophyceae). It is composed of 2–6 genera, based upon various circumscriptions. [1] [2] The circumscription in the taxobox (right) is the list of genera from AlgaeBase, although only 3 of these genera are listed as containing species, 11 species in Cutleria, and one each in Microzonia, and Zanardinia. Lee circumscribes the order with only the two genera, Cutleria and Zanardinia.

In biological classification, the order is

  1. a taxonomic rank used in the classification of organisms and recognized by the nomenclature codes. Other well-known ranks are life, domain, kingdom, phylum, class, family, genus, and species, with order fitting in between class and family. An immediately higher rank, superorder, may be added directly above order, while suborder would be a lower rank.
  2. a taxonomic unit, a taxon, in that rank. In that case the plural is orders.
Brown algae A large group of multicellular algae, comprising the class Phaeophyceae

The brown algae, comprising the class Phaeophyceae, are a large group of multicellular algae, including many seaweeds located in colder waters within the Northern Hemisphere. Most brown algae live in marine environments, where they play an important role both as food and as habitat. For instance, Macrocystis, a kelp of the order Laminariales, may reach 60 m (200 ft) in length and forms prominent underwater kelp forests. Kelp forests like these contain a high level of biodiversity. Another example is Sargassum, which creates unique floating mats of seaweed in the tropical waters of the Sargasso Sea that serve as the habitats for many species. Many brown algae, such as members of the order Fucales, commonly grow along rocky seashores. Some members of the class, such as kelps, are used by humans as food.

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Fucaceae family of algae

The Fucaceae are a family of brown algae, containing six genera:

AlgaeBase database of scientific names for algae

AlgaeBase is a global species database of information on all groups of algae, as well as one group of flowering plants, the sea-grasses.

Dictyotales order of brown algae

Dictyotales is a large order in the brown algae. Members of this order generally prefer warmer waters than other brown algae. One genus in this order is calcareous, Padina, the only calcareous member of this phylum.

Ectocarpales order of algae

Ectocarpales is a very large order in the brown algae. The order includes families with pseudoparenchymatous (Splachnidiaceae) or true parenchymatous (Scytosiphonaceae) tissue. Pseudoparenchymatous refers to a filamentous alga with cells packed very close together to give an appearance of parenchymatous tissue, the latter being composed of cells which can truly divide in three dimensions, unusual among the algae. Filamentous algae are composed of cells that divide along a single plane, allowing only elongation to form filaments of one or more rows of cells. Algae that can divide in two planes can form sheet-like thalli or bodies. Cells that can divide in a third plane potentially allow for the organism to develop a more complex body plan, and diversification of body plans into an erect thallus of some sort and a holdfast for attaching the upright portion to the substrate.

Eustigmatophyte A small group of algae with marine, freshwater and soil-living species

Eustigmatophytes are a small group of eukaryotic algae that includes marine, freshwater and soil-living species.

Trebouxiophyceae class of algae

The Trebouxiophyceae are a class of green algae, in the division Chlorophyta. Their circumscription within the green algae is not well established due to the need for more genetic studies at higher levels within the group.

Ulotrichales order of algae

Ulotrichales is an order of green algae in the class Ulvophyceae.

Rivulariaceae family of Cyanobacteria

The Rivulariaceae are a family of cyanobacteria within the Nostocales in which the filaments (trichomes) are tapered from wider at the base to narrower at the tip.

Pavlovaceae family of algae

Pavlovaceae is a family of haptophytes. It is the only family in the order Pavlovales, which is the only order in the class Pavlovophyceae. It contains four genera, Diacronema, Exanthemachrysis, Pavlova and Rebecca.

Botrydiaceae family of algae

Botrydiaceae is a family of yellow-green algae comprising 12 species in two genera. It is the only family in the order Botrydiales.

Onslowiaceae is the only family in order Onslowiales in the brown algae. The family contains only the genera Onslowia and Verosphacela.

Choristocarpaceae is the only family in the order Discosporangiales of the brown algae. The family contains two genera, each with a single species.

Vaucheria is a genus of Xanthophyceae or yellow-green algae. It is one of only two genera in the family Vaucheriaceae. The type species of the genus is Vaucheria disperma.

Acrochaetiales order of algae

Acrochaetiales is an order of red algae.

Cutleria is a genus of brown algae, one of 2–6 genera in the order Cutleriales. AlgaeBase recognises 11 species in the genus. The genus was described by Robert Kaye Greville.

Syracosphaeraceae is a family of algae consisting of the following genera:

References

  1. ↑ Lee, R.E. (2008). "21. Heterokontophyta § Cutleriales". Phycology (4th ed.). Cambridge University Press. p. 436. ISBN   978-1-139-46987-6.
  2. ↑ Guiry, MD; GM Guiry (2006). "AlgaeBase version 4.2". World-wide electronic publication, National University of Ireland, Galway. Retrieved 2006-11-22.


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