Calamitaceae
plural noun
Cal·a·mi·ta·ce·ae
| \ ˌkaləˌmīˈtāsēˌē, -məˈt- \
Definition of Calamitaceae
: a family of fossil plants coextensive with Calamariaceae
—used by strict adherents to the International Rules of Botanical Nomenclature
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Merriam-Webster unabridged
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