1.  Keys to Taxus 

                                             Key to Taxus Species Groups and Subgroups

                                                     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