Zygnematophyceae

Zygnematophyceae
	Conjugation in Spirogyra.
Scientific classification
(unranked):	Viridiplantae
(unranked):	Charophyta
Class:	Zygnematophyceae; Round, 1971
Subclasses
	Subclass Zygnematophycidae Order Zygnematales; Order Desmidiales; Order Spirogyrales; Order Serritaeniales; ; Subclass Spirogloeophycidae Order Spirogloeales; ;
Synonyms
	Akontae Blackman & Tansley, 1902; Conjugatophyceae Engler, 1892; 'Conjugatae' Engler, 1892; Gamophyceae; Saccodermae Pascher ex Kossinskaja, 1952; Zygnemaphyceae Round 1971; Zygophyceae Widder, 1960;

Zygnematophyceae (or Conjugatophyceae) is a class of green algae in the paraphylum streptophyte algae, also referred to as Charophyta, consisting of more than 4000 described species. The Zygnematophyceae are the sister clade of the Embryophyta (land plants).

Common members of the Zygnematophyceae include the filamentous algae Spirogyra and Mougeotia, as well as desmids, which are microscopic algae characterized by symmetrical and elaborately ornate cells.

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