In 1841, Édouard Spach created the genus Chamaecyparis (Chamécyparis in his original French text) in volume 11 (page 329) of his Histoire Naturelle des Végétaux: Phanérogames. In 1888, when Nathaniel Lord Britton, E. E. Sterns, and Justus F. Poggenburg (usually abbreviated as B.S.P.) “revised and corrected” the nomenclature of the Preliminary Catalogue of Anthophyta and Pteridophyta reported as growing spontaneously within one hundred miles of New York City, they moved Cupressus thyoides to the genus Chamaecyparis (page 71). Therefore, the current name for the species is Chamaecyparis thyoides (L.) B.S.P.
Cupressus foliis imbricatis, frondibus ancipitibus.
Cupressus with imbricate leaves [and] two-sided branchlets.
|with imbricate||imbricatis - ablative plural neuter of group A adjective imbricatus, -a, -um; modifies foliis|
|leaves||foliis - ablative plural of second declension neuter noun folium, -i|
|[and]||added for smoother reading|
|two-sided [i.e., planar]||ancipitibus - ablative plural feminine of group B adjective anceps, anceps, anceps; modifies frondibus|
|branchlets.||frondibus - ablative plural of 3rd declension feminine noun frons, frondis|