Natura - nature
actualia - actual entities
Mundus Plinius - physical world
naturalia - natural bodies
Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
"neomura" Cavalier-Smith 1987
Domain Eukaryota Chatton, 1925 - eukaryotes
neokaryotes Cavalier-Smith 1993 - mitochondrial eukaryotes
neozoa Cavalier-Smith 1993
Superkingdom Corticata Lankester, 1878
Kingdom Plantae Haeckel (1866) - plants
Subkingdom Viridiplantae Caval.-Sm. (1981) - green plants
Infrakingdom Streptophyta C. Jeffrey (1967)
Superphylum Embryophyta
"polysporangiophytes"
Phylum Tracheophyta Sinnott ex Caval.-Sm. (1998) - vascular plants
Subphylum Euphyllophytina
Infraphylum "Radiatopses" Kenrick & Crane (1997)
"lignophytes"
Class Spermatopsida
"core seed plants"
Subclass Pinidae Cronquist, Takht. & Zimmerm. (1966)
Order Pinalesᵀ Gorozh. (1904) - conifers
Family Pinaceaeᵀ Spreng. ex F. Rudolphi (1830) - pine family
Subfamily Abietoideae (Bercht. & J. Presl) Rich. ex Sweet (1826)
Genus Tsuga (Endl.) Carrière (1855)
Tsuga canadensis (L.) Carrière (1855) - Canada hemlock
Tsuga heterophylla (Raf.) Sarg. - western hemlock
Tsuga sieboldiiᵀ Carrière (1855)
Subgenus Tsuga subg. Tsugaᵀ (Endlicher, 1847)