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|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
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
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