1.  Key to  Species Groups and Subgroups of Taxus

                                     Taxus wallichiana Group, Subgroup wallichiana (North America, E India-SW China)

                                  Taxus wallichiana Group, Subgroup chinensis (India to Indonesia and Philippines)

                                  Taxus sumatrana Group (India to Indonesia and Philippines)

                                  Taxus baccata Alliance (Euro-Mediterranean)

                                  Taxus cuspidata Alliance (E Asia, E North America)

                     2.  Nomenclature and Descriptions for Species of Taxus

                                                     North American Species of the Taxus wallichiana Group

                                                     Taxus baccata Group

                                                           Taxus baccata Alliance

                                                                 Taxus baccata

                                                                     var. baccata
                                                                     var. dovastoniana
                                                                     var. elegantissima
                                                                             cv. ‘Repandens’
                                                                     var. erecta
                                                                     var. ericoides
                                                                     var. fructo-lutea
                                                                     var. glauca
                                                                     var. jacksonii
                                                                     var. pyramidalis
                                                                     var. subpyramidalis
                                                                     var. variegata
                                                                     var. washingtonii

                                                                 Taxus contorta

                                                                     var. contorta
                                                                     var. mucronata

                                                                 Taxus fastigiata

                                                                     var. fastigiata
                                                                     var. nana*
                                                                     var. sparsifolia*

                                                               Taxus recurvata

                                                                     var. recurvata
                                                                     var. intermedia*
                                                                     var. linearis*          
                                                                 
                                                           Taxus cuspidata Alliance

                                                                Taxus biternata

                                                                Taxus caespitosa

                                                                     var. angustifolia
                                                                     var. caespitosa
                                                                     var. latifolia

                                                                Taxus canadensis

                                                                     var. canadensis
                                                                     var. adpressa
                                                                     var. minor

                                                                Taxus cuspidata

                                                                Taxus umbraculifera

                                                                     var. umbraculifera
                                                                     var. hicksii
                                                                     var. microcarpa
                                                                     var. nana

                                                         Taxus sumatrana Group

                                                                Taxus celebica

                                                                Taxus kingstonii

                                                                Taxus mairei
                                                                    var. mairei
                                                                    var. speciosa

                                                                Taxus sumatrana

                                                                    var. sumatrana
                                                                    var. atrovirens*
                                                                    var. concolorata*

                                                        Taxus wallichiana Group

                                                             Subgroup Wallichiana

                                                                 Taxus brevifolia

                                                                    var. brevifolia
                                                                    var. polychaeta
                                                                    var. reptaneta

                                                                 Taxus florinii

                                                                 Taxus globosa

                                                                    var. globosa
                                                                    var. floridana

                                                                 Taxus suffnessii

                                                                 Taxus wallichiana

                                                                    var. wallichiana
                                                                    var. yunnanensis

                                                              Subgroup Chinensis

                                                                  Taxus chinensis

                                                                  Taxus obscura

                                                                  Taxus ocreata*

                                                                  Taxus phytonii

                                                                  Taxus rehderiana*

                                                                  Taxus scutata*