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Definition of Isoetales
1. Noun. Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.
Exact synonyms: Order Isoetales
Generic synonyms: Plant Order
Group relationships: Class Lycopodiate, Class Lycopsida, Lycopodiate, Lycopsida
Member holonyms: Family Isoetaceae, Isoetaceae, Quillwort Family
Generic synonyms: Plant Order
Group relationships: Class Lycopodiate, Class Lycopsida, Lycopodiate, Lycopsida
Member holonyms: Family Isoetaceae, Isoetaceae, Quillwort Family