quillwort family


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Noun1.quillwort family - quillwortsquillwort family - quillworts; coextensive with the genus Isoetes
fern family - families of ferns and fern allies
Isoetales, order Isoetales - aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales
genus Isoetes, Isoetes - type and genus of the Isoetaceae and sole extant genus of the order Isoetales