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Charophyta (UK: / k ə ˈ r ɒ f ɪ t ə, ˌ k ær ə ˈ f aɪ t ə /) is a group of freshwater green algae, called charophytes (/ ˈ k ær ə ˌ f aɪ t s /), sometimes treated as a division, [2] yet also as a superdivision [3] or an unranked clade.
Zygnematophyceae (or Conjugatophyceae) is a class of green algae in the paraphylum streptophyte algae, also referred to as Charophyta, [2] consisting of more than 4000 described species. [3] The Zygnematophyceae are the sister clade of the Embryophyta (land plants). [4] [5] [6]
Charophyceae is a class of charophyte green algae. AlgaeBase places it in division Charophyta. [1] Extant (living) species are placed in a single order Charales, [2] commonly known as "stoneworts" and "brittleworts".
There are about 400 extant species worldwide, with 33 in Britain and Ireland according to Groves and Bullock-Webster), [2] [3] however Stewart and Church (1992) reduce this to 21. [4] Characeae are the principal photosynthesizers of some of the volcanic crater lakes of Nicaragua, and can be found in excess of 20 meters depth in some circumstances.
The Zygnematales (Greek: ζυγός (zygós) and νῆμα (nḗma) , νήματος (nḗmatos) ), also called the Conjugatales, [1] are an order of green algae, [2] comprising several thousand different species in two families.
This category contains valid Charophyta species names, i.e. species of Streptophyta with the exclusion of land plants. Alternate names (i.e. junior synonyms) are not included here. Italicized entries are articles about species in monotypic genera; these are redirected to their appropriate genus article.
Charales is an order of freshwater green algae in the division Charophyta, class Charophyceae, commonly known as stoneworts. Depending on the treatment of the genus Nitellopsis , living (extant) species are placed into either one family ( Characeae ) or two (Characeae and Feistiellaceae ).
There are about 40 species of Chara in Europe, where they are commonly found in the specific habitat-type designated as H3140 (hard oligo-mesotrophic waters with benthic vegetation of Chara spp h1) in the Natura 2000 plans of the European Union. Although this habitat is found all across Europe, it is threatened and to be protected and preserved.