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Organism
  Plantae
   Viridiplantae
     Streptophyta
     Embryophyta
      Tracheophyta
        Spermatophytina
            Magnoliopsida
                  Rosanae
                    Sapindales
                           [Acerales]
                           [Aesculales]
                           [Amyridales]
                           [Aurantiales]
                           [Biebersteiniales]
                           [Burserales]
                           [Cedrelales]
                           [Citrales]
                           [Cneorales]
                           [Diosmales]
                           [Hippocastanales]
                           [Julianiales]
                           [Leitneriales]
                           [Meliales]
                           [Nitrariales]
                           [Pteleales]
                           [Rutales]
                           [Simaroubales]
                           [Spondiadales]
                           [Zanthoxylales]
                            Simaroubaceae
                                   [Ailanthaceae]
                                   [Castelaceae]
                                   [Holacanthaceae]
                                   [Leitneriaceae]
                                   [Quassiaceae]
                                   [Simabaceae]
                                   [Soulameaceae]
                                     Aeschrion
                                     Ailanthus
                                             Ailanthus altissima
                                                   [Ailanthus glandulosa]
                                                   [Toxicodendron altissimum]
                                     Brucea
                                             Brucea javanica
                                                   [Rhus javanica]
                                     Castela
                                             Castela emoryi
                                                   [Holacantha emoryi]
                                             Castela erecta
                                                   [Castela erecta subsp. erecta]
                                                   [Castelaria nicholsonii]
                                               Castela erecta subsp. erecta
                                                     [Castela nicholsonii]
                                             Castela peninsularis
                                             Castela polyandra
                                             Castela texana
                                                   [Castela erecta subsp. texana]
                                                   [Castela tortuosa]
                                     Castelaria
                                     Eurycoma
                                             Eurycoma longifolia
                                     Holacantha
                                             Holacantha stewartii
                                                   [Castela stewartii]
                                                   [Holacantha stewratii]
                                     Leitneria
                                             Leitneria floridana
                                     Picrasma
                                             Picrasma excelsa
                                                   [Aeschrion antillana]
                                                   [Aeschrion excelsa]
                                                   [Picramnia antillana]
                                                   [Picramnia excelsa]
                                                   [Picrasma antillana]
                                                   [Quassia excelsa]
                                             Picrasma mexicana
                                             Picrasma quassioides
                                     Quassia
                                             Quassia amara
                                             Quassia baileyana
                                                   [Samadera baileyana]
                                     Samadera
                                             Samadera indica
                                                   [Quassia indica]
                                     Simarouba
                                             Simarouba amara
                                             Simarouba glauca
                                               Simarouba glauca var. latifolia
                                             Simarouba laevis
                                             Simarouba tulae
                                     Soulamea
                                             Soulamea cycloptera