Phylum Magnoliophyta Cronquist, Takht. & Zimmerm. ex Reveal (1996) see Infraphylum Angiospermae auct.
Count: [f] 2c;232o;592f;6085g;41s; †1g
   Class Magnoliopsida Brongn. (1843)
  Count: -
     Subclass Rosidae Takht. (1967) see Superorder Rosanae Takht. (1967)
    Count: [f] 45o;130f;1338g; †1g
       Superorder Rhamnanae Takht. ex Reveal (1992) see Order Rosales Bercht. & J.Presl (1820)
      Count: [f] 2o;2f;38g
         Order Rhamnales Dumort. (1829) see Order Rosales Bercht. & J.Presl (1820)
        Count: [f] 1f;35g
           Family Rhamnaceae Juss. (1789), nom. cons. - buckthorn family
          Count: 35g
             Tribe Rhamneae
            Count: 16g
               Genus Ceanothus L. (1753)
              Count: -