Colorado Cactus Classification

Kingdom: Plantae — Plants

Subkingdom: Tracheobionta — Vascular Plants

Superphylum: Spermatophyta — Seed Plants

Phylum: Magnoliophyta — Flowering Plants

Class: Magnoliopsida — Dicotyledons

Subclass: Caryophyllidae

Order: Caryophyllales

Family: Cactaceae — Cactuses

Taxon              Latin Name                   Naming Authority                              Date Classified

Genus               Cylindropuntia               (Engelmann) Kreuzinger

     Species        imbricata                        (Haw.) F.M. Knuth

     Species        whipplei                          (Engelmann & Bigelow) F.M. Knuth

Genus               Echinocereus                  Engelmann

     Species        coccineus                        Engelmann

     Species        fendleri                           (Engelmann) F. Seitz

     Species        reichenbachii                  (Terschek ex Walp.) Heage f.

     Species        triglochidiatus                Engelmann

     Species        viridiflorus                     Engelmann

Genus               Escobaria                       Britton & Rose

     Species        missouriensis                  (Sweet) D.R. Hunt

     Species        vivipara                          (Nutt.) Buxbaum

Genus               Opuntia                          P. Mill.

     Species        cymochila                       Engelmann & Bigelow

     Species        erinacea                         Engelmann & Bigelow

     Species        fragilis                            (Nutt.) Haw.

     Species        heacockiae                     Arp

     Species        humifusa                        (Raf.) Raf.

     Species        macrorhiza                     Engelmann

     Species        phaeacantha                  Engelmann

     Species        polyacantha                   Haw.

Genus               Pediocactus                    Britton & Rose

     Species        knowltonii                      L. Benson

     Species        simpsonii                        (Engelmann) Britton & Rose

Genus               Sclerocactus                   Britton & Rose

     Species        glaucus                           (J.A. Purpus ex K. Schum.)

                                                               L. Benson

     Species        mesa-verde                     (Boissevain & C. Davids.

                                                               ex Marshall & Bock) L. Benson

     Species        parviflorus                     Clover & Jotter