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|Noun||1.||protoctist family - any of the families of Protoctista|
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
family Laminariaceae, Laminariaceae - large family of marine brown algae including many economically important large kelps chiefly of northern waters
Chlamydomonadaceae, family Chlamydomonadaceae - green algae some of which are colored red by hematochrome
family Zygnemataceae, Zygnemataceae - pond scums: common freshwater algae forming green slimy masses
family - (biology) a taxonomic group containing one or more genera; "sharks belong to the fish family"
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