see text Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Divisions Land plants (embryophytes) Non-vascular plants (bryophytes) Hepaticophyta - liverworts Anthocerotophyta - hornworts Bryophyta - mosses Vascular plants (tracheophytes) Lycopodiophyta - clubmosses Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongues Seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta - ginkgo Gnetophyta - gnetae Magnoliophyta - flowering plants Adiantum pedatum (a fern... Classes Chlorophyceae Ulvophyceae Trebouxiophyceae Prasinophyceae The Chlorophyta sensu stricto or chlorophyte algae, comprises most of what are commonly called green algae and includes most members of the grade of putatively ancestral scaly flagellates in Prasinophyceae plus members of Ulvophyceae, Trebouxiophyceae, and Chlorophyceae. ...
The Chlorophyceae are one of the classes of green algae, distinguished mainly on the basis of ultrastructural morphology. For example the chlorophycean CW clade, and chlorophycean DO clade, are defined by the arrangement of their flagella. Members of the CW clade have flagella that are displaced in a "clockwise" (CW, 1–7 o'clock) direction eg. Chlamydomonadales. Members of the DO clade have flagella that are "directly opposed" (DO, 12–6 o'clock) eg. Sphaeropleales. Divisions Chlorophyta Charophyta Streptophytina (Subdivision) The green algae are the large group of algae from which the embryophytes (higher plants) emerged. ... A flagellum (plural, flagella) is a whip-like organelle that many unicellular organisms, and some multicellular ones, use to move about. ... Genera Hydrodictyaceae Neochloridaceae Scenedesmaceae Selenastraceae Sphaeropleaceae The Sphaeropleales are an order of green algae. ...
In older classifications, the term Chlorophyceae is sometimes used to apply to all the green algae except the Charales, and the internal division is considerably different. Species see text Chlamydomonas is a genus of green alga. ... Families Goniaceae Spondylomoraceae Tetrabaenaceae Volvocaceae The Volvocales are an order of flagellate or pseudociliate green algae which form planar or spherical colonies. ... Species Ehrenberg Stein = Lyengar Linnaeus emend. ... Chlorellae is a collective name for a single celled algae. ... Oedogonium is a genus of filamentous green algae. ... Genera Hydrodictyaceae Neochloridaceae Scenedesmaceae Selenastraceae Sphaeropleaceae The Sphaeropleales are an order of green algae. ... Genera Chara Lamprothamnium Nitella Tolypella The Charales are an order of green algae, and are believed to be the closest relatives of the embryophyte plants. ...
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