noun
quillworts; coextensive with the genus Isoetes
• Syn: ↑Isoetaceae, ↑family Isoetaceae
• Hypernyms: ↑fern family
• Member Holonyms: ↑Isoetales, ↑order Isoetales
• Member Meronyms: ↑Isoetes, ↑genus Isoetes
Useful english dictionary. 2012.