Central Taxonomic Thesaurus
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  Plantae
      Embryophyta
      Marchantiophyta
             [Hepaticae]
             [Hepatophyta]
             [Hepatopsida]
             [Marchantiae]
            Jungermanniopsida
              Jungermanniae
                    Jungermanniales
                            Porellaceae
                                     Ascidiota
                                             Ascidiota blepharophylla
                                               Ascidiota blepharophylla subsp. alaskana
                                     Madotheca
                                             Madotheca thuja
                                     Porella
                                           [Macvicaria]
                                             Porella aboris-vitae
                                                   [Porella laevigata]
                                             Porella acutifolia
                                               Porella acutifolia subsp. tosana
                                                     [Porella tosana]
                                             Porella bolanderi
                                             Porella brachiata
                                             Porella canariensis
                                             Porella complanata
                                             Porella cordaeana
                                                   [Madotheca cordaeana]
                                             Porella crispata
                                                   [Porella arborea]
                                             Porella densifolia
                                             Porella fauriei
                                             Porella grandiloba
                                             Porella leiboldii
                                             Porella liebmanniana
                                             Porella mexicana
                                             Porella navicularis
                                                   [Jungermannia navicularis]
                                                   [Madotheca navicularis]
                                             Porella perrottetiana
                                             Porella pinnata
                                                   [Porella wataugensis]
                                             Porella platyphylla
                                                   [Madotheca platyphylla]
                                               Porella platyphylla var. platyphylloidea
                                             Porella platyphylloidea
                                                   [Jungermannia platyphylloidea]
                                             Porella rivularis
                                             Porella roellii
                                                   [Madotheca roellii]
                                             Porella swartziana
                                             Porella ulophylla
                                                   [Macvicaria ulophylla]
                                             Porella vernicosa
                                               Porella japonica subsp. appalachiana
                                               Porella obtusata var. macroloba
                                                     [Porella macroloba]