isoetales

English Thesaurus

1. aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales (noun.plant)

hypernym	:	plant order,
definition	:	the order of plants (noun.plant)

member holonym	:	family isoetaceae, isoetaceae, quillwort family,
definition	:	quillworts; coextensive with the genus Isoetes (noun.plant)

member meronym	:	class lycopodiate, class lycopsida, lycopodiate, lycopsida,
definition	:	club mosses and related forms: includes Lycopodiales; Isoetales; Selaginellales; and extinct Lepidodendrales; sometimes considered a subdivision of Tracheophyta (noun.plant)