Belongs within: Diaphoretickes.Contains: Tetrasporales, Mamiellophyceae, Chlorodendrophyceae, Tetraphytae, Pyramimonas. The Chlorophyta are a major group of green algae including both unicellular and multicellular lineages, with most representatives being aquatic. Plastid thylakoids may be single or stacked, and glycolate dehydrogenase is present. Cell division does not involve a phragmoplast (Adl et al. 2019). <==Chlorophyta [Micromonadophyceae, Nephrophyceae, Nephroselmidaceae,… Continue reading Chlorophyta


Belongs within: Chlorophyta.Contains: Trebouxiophyceae, Volvocales, Chlorococcales, Oedogoniophyceae, Bryopsidales, Ulvales, Ulotrichales, Trentepohliales, Dasycladales, Cladophoraceae, Siphonocladales. The Tetraphytae are a clade of green algae in which cytokinesis involves a phycoplast, a system of microtubules that is oriented parallel to the plane of cell division. Characters (from Cavalier-Smith 1998): Cruciate microtubular roots without MLS; telophase spindle collapses; cytokinesis… Continue reading Tetraphytae


Belongs within: Trebouxiophyceae. The Chlorosarcinaceae are unicellular green algae exhibiting vegetative cell division (desmoschisis) as well as zoosporogenesis (Archibald 1990). <==Chlorosarcinaceae [Chlorosarcinales]A90 |–AxilosphaeraA90 |–BorodinellaA90 |–BorodinellopsisA90 |–BotryokoryneA90 |–ChlorosarcinaA90 |–ChlorosarcinopsisA90 |–ChlorosphaeropsisA90 |–FasciculochlorisA90 |–FernandinellaA90 |–Friedmannia israelensisA90, MS95 |–HeterotetracystisA90 |–PlanophilaA90 |–PseudotetracystisA90 |–PseudotrebouxiaA90 |–SpongiococcumA90 `–TetracystisA90 *Type species of generic name indicated References [A90] Archibald, P. A. 1990. Soil algae. In:… Continue reading Chlorosarcinaceae


Belongs within: Chlorococcales. The Chlorococcaceae are a family of unicellular or coenocytic green algae. Chlorococcaceae |–Chlorococcum humicoloA90, SG05 |–Bracteacoccus grandis Bischoff & Bold 1963A90, GPN97 |–DictyochlorisA90 |–DictyococcusA90 |–KentrosphaeraA90 |–NautococcusA90 |–NeospongiococcumA90 |–PlanktosphaeriaA90 |–PulchrasphaeraA90 |–SpongiochlorisA90 |–Glenobotrydion Schof 1968KS92 | |–*G. aenigmatis Schopf 1968KS92 | `–G. majorinum Schopf & Blacic 1971KS92 |–Globophycus Schopf 1968KS92 | |–*G. rugosum Schopf… Continue reading Chlorococcaceae


Belongs within: Chlorococcales. The Scenedesmaceae are freshwater, unicellular green algae forming flat or three-dimensional colonies. Scenedesmaceae [Coelastraceae]A90 |–Crucigenia Morren 1830A90, M70 | |–C. fenestrataM70 | |–C. quadrata Morren 1830M70 | `–C. tetrapedia (Kirchner) West & West 1902M70 |–Coelastrum Nageli in Kutzing 1849A90, M70 | |–C. cambricumRA05 | | |–C. c. var. cambricumRA05 | | `–C.… Continue reading Scenedesmaceae


Belongs within: Tetraphytae.Contains: Chlorella, Chlorosarcinaceae. The Trebouxiophyceae are a group of unicellular green algae, some of which are found in lichen-forming symbioses with fungi. Characters (from Adl et al. 2012): Swimming cells with one or two pairs of cilia, without mastigonemes; basal bodies with four microtubular rootlets in cruciate arrangement, including a multi-layered structure, and… Continue reading Trebouxiophyceae


Belongs within: Chlorococcales. The Hydrodictyaceae are freshwater green algae forming star-like or net-like, sometimes macroscopic colonies. Hydrodictyaceae |–Hydrodictyon [Hydrodictyeae]L-BC03 | `–H. reticulatum [=Conferva reticulata; incl. H. utriculatum]G64 |–Tetraedron Kutzing 1845RA05, M70 | |–T. caudatum (Corda) Hansgirg 1888M70 | |–T. gracileRA05 | |–T. muticum (Braun) Hansgirg 1888M70 | `–T. trigonum (Nageli) Hansgirg 1888M70 `–Pediastrum Meyen 1829SG05,… Continue reading Hydrodictyaceae


Belongs within: Tetraphytae.Contains: Anthracoporella, Luliporeae. The Dasycladales are a group of macroscopic but unicellular green algae, many species of which develop a calcareous skeleton. Thalli are radially symmetrical with whorls of simple or divided laterals branching from a central axis or stalk (Norris 2010). Characters (from Womersley 1984): Thallus diplontic, coenocytic (often with constricted segments… Continue reading Dasycladales


Belongs within: Bryopsidales. Codium is a cosmopolitan genus of marine algae with spongy thalli (Norris 2010). Characters (from Norris 2010): Algae spongy, non-calcareous macrothalli of definite shapes, either prostrate or repent globose or pulvinate forms, or erect branching cylindrical, compressed, or complanate forms. Internally, thalli composed of branched filaments organised into medulla of longitudinal, densely… Continue reading Codium


Belongs within: Tetraphytae.Contains: Udoteaceae, Caulerpa, Codium. The Bryopsidales are a primarily marine group of coenocytic green algae (Norris 2010). Characters (from Norris 2010): Algae variable in shape and size, ranging from simple (unbranched) to branched and to complex systems of branching tubular siphons or filaments. Occasionally forming globose vesicles; others are of filaments or siphons… Continue reading Bryopsidales