Class Equisetopsida C.Agardh (1825) - horsetails see Subclass Equisetidae Warm. (1883)
   gymnosperms see Class Spermatopsida
     Subclass Pinidae Cronquist, Takht. & Zimmerm. (1966) - conifers
       Order Cupressales Link (1829)
         Family Cupressaceae Gray (1822), nom. cons. - cypress family
           01 Genus Cunninghamia R.Br. (1826), nom. cons.
           02 Genus Taiwania Hayata (1906)
           03 Genus Athrotaxis D.Don (1838)
           04 Genus Metasequoia Hu & W.C.Cheng (1948), nom. cons.
           05 Genus Sequoia Endl. (1847), nom. cons.
           06 Genus Sequoiadendron J.Buchholz (1939), nom. cons. prop.
           07 Genus Cryptomeria D.Don (1838)
           08 Genus Glyptostrobus Endl. (1847)
           09 Genus Taxodium Rich. (1810)
           10 Genus Papuacedrus H.L.Li (1953)
           11 Genus Austrocedrus Florin & Boutelje (1954)
           12 Genus Libocedrus Endl. (1847)
           13 Genus Pilgerodendron Florin (1930)
           14 Genus Widdringtonia Endl. (1842)
           15 Genus Diselma Hook.f. (1857)
           16 Genus Fitzroya Hook.f. ex Lindl. (1851), nom. cons., orth. cons.
           17 Genus Callitris Vent. (1808)
           17.s [Genus Octoclinis F.Muell. (1857)] see Genus Callitris Vent. (1808)
           18 Genus Actinostrobus Miq. (1845)
           19 Genus Neocallitropsis Florin (1944)
           19.s [Genus Callitropsis Compton (1922), nom. illeg.] see Genus Neocallitropsis Florin (1944)
           20 Genus Thujopsis Siebold & Zucc. ex Endl. (1842), nom. cons.
           21 Genus Thuja L. (1753)
           22 Genus Fokienia A.Henry & H.H.Thomas (1911)
           23 Genus Chamaecyparis Spach (1841)
           24 Genus Cupressus L. (1753) - cypresses
           24.s.1 [Genus Callitropsis Oerst. (1864), nom. rej. prop.] see Genus Cupressus L. (1753)
           24.s.2 [Genus Xanthocyparis Farjon & Hiep (2002), nom. cons. prop.] see Genus Cupressus L. (1753)
           25 Genus Juniperus L. (1753) - junipers
           25.s.1 [Genus Sabina Mill. (1754)] see Genus Juniperus L. (1753)
           25.s.4 [Genus Arceuthos Antoine & Kotschy (1854)] see Genus Juniperus L. (1753)
           26 Genus Calocedrus Kurz (1873)
           26.s [Genus Heyderia C. Koch (1873), nom. illeg.] see Genus Calocedrus Kurz (1873)
           27 Genus Tetraclinis Masters (1892)
           28 Genus Platycladus Spach (1841)
           28.s [Genus Biota (D.Don) Endl. (1847), nom. illeg.] see Genus Platycladus Spach (1841)
           29 Genus Microbiota Komarov (1923)