Class Equisetopsida C.Agardh (1825) - horsetails see Subclass Equisetidae Warm. (1883) gymnosperms see Class Spermatopsida Subclass Pinidae Cronquist, Takht. & Zimmerm. (1966) - conifers Order Pinales Dumort. (1829) - conifers Family Pinaceae Spreng. ex F.Rudolphi (1830), nom. cons. - pine family Genus Cathaya Chun & Kuang (1962)