protoctist order

Thesaurus

Noun

1.

protoctist order - the order of protoctists kingdom Protoctista, Protoctista - in most modern classifications, replacement for the Protista; includes: Protozoa; Euglenophyta; Chlorophyta; Cryptophyta; Heterokontophyta; Rhodophyta; unicellular protists and their descendant multicellular organisms: regarded as distinct from plants and animals Heterotrichales, order Heterotrichales - yellow-green algae with simple or branching filaments; comprising the single family Tribonemaceae Laminariales, order Laminariales - in some classifications coextensive with family Laminariaceae: marine brown algae of cold or polar seas order Ulvales, Ulvales - an order of protoctist order Volvocales, Volvocales - chiefly freshwater green algae; solitary or colonial Chlorococcales, order Chlorococcales - unicellular green algae that reproduce by spores Oedogoniales, order oedogoniales - simple or branched filamentous freshwater green algae Charales, order Charales - small order of macroscopic fresh and brackish water algae with a distinct axis: stoneworts order - (biology) taxonomic group containing one or more families