quillwort family

Thesaurus

Noun

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