Central Taxonomic Thesaurus

Taxon Search
  Plantae
      Magnoliophyta
             [Angiospermae]
         Eudicots
             Core Eudicots
               Rosids
               Fabids
                    Fagales
                            Betulaceae
                                     Alnus
                                           [Alnaster]
                                             Alnus acuminata
                                               Alnus acuminata ssp. arguta
                                               Alnus acuminata ssp. glabrata
                                             Alnus alnobetula
                                             Alnus alnus
                                             Alnus arguta
                                               Alnus arguta var. cuprea
                                               Alnus arguta var. subsericea
                                             Alnus cordata
                                             Alnus crispa
                                               Alnus crispa ssp. laciniata
                                               Alnus crispa ssp. sinuata
                                               Alnus crispa var. elongata
                                               Alnus crispa var. mollis
                                             Alnus densiflora
                                             Alnus ferruginea
                                             Alnus firmifolia
                                             Alnus glabrata
                                             Alnus glutinosa
                                             Alnus incana
                                               Alnus incana ssp. incana
                                               Alnus incana ssp. rugosa
                                               Alnus incana ssp. tenuifolia
                                                     [Alnus incana var. occidentalis]
                                                     [Alnus incana var. virescens]
                                                     [Alnus tenuifolia]
                                                     [Alnus x purpusii]
                                               Alnus incana var. americana
                                               Alnus incana var. serrulata
                                             Alnus japonica
                                             Alnus jorullenis
                                             Alnus jorullensis
                                               Alnus jorullensis var. exigua
                                             Alnus maritima
                                               Alnus maritima ssp. metoporina
                                               Alnus maritima var. metoporina
                                             Alnus metoporina
                                             Alnus mollis
                                             Alnus nepalensis
                                             Alnus noveboracensis
                                             Alnus oblongifolia
                                             Alnus oregona
                                               Alnus oregona var. pinnatisecta
                                             Alnus pendula
                                             Alnus pringlei
                                             Alnus rhombifolia
                                                   [Alnus rhombifolia var. bernardina]
                                               Alnus rhombifolia var. ovalis
                                             Alnus rubra
                                             Alnus rugosa
                                               Alnus rugosa var. americana
                                             Alnus serrulata
                                               Alnus serrulata var. subelliptica
                                             Alnus sinuata
                                             Alnus sitchensis
                                             Alnus trabeculosa
                                             Alnus viridis
                                               Alnus viridis ssp. crispa
                                               Alnus viridis ssp. fruticosa
                                               Alnus viridis ssp. sinuata
                                               Alnus viridis var. crispa
                                               Alnus viridis var. sinuata
                                             Alnus x fallacina
                                             Alnus x hultenii
                                     Betula
                                             Betula alaskana
                                             Betula alba
                                               Betula alba var. commutata
                                               Betula alba var. cordifolia
                                             Betula alleghaniensis
                                               Betula alleghaniensis var. alleghaniensis
                                               Betula alleghaniensis var. fallax
                                               Betula alleghaniensis var. macrolepis
                                             Betula andrewsii
                                             Betula borealis
                                             Betula cordifolia
                                             Betula exilis
                                             Betula glandulifera
                                             Betula glandulosa
                                               Betula glandulosa var. glandulifera
                                               Betula glandulosa var. hallii
                                               Betula glandulosa var. sibirica
                                             Betula jacquemontii
                                             Betula japonica
                                             Betula kamtschatica
                                             Betula kenaica
                                             Betula lenta
                                               Betula lenta ssp. uber
                                               Betula lenta var. uber
                                             Betula lutea
                                               Betula lutea var. fallax
                                               Betula lutea var. macrolepis
                                             Betula mandshurica
                                               Betula mandshurica var. japonica
                                               Betula mandshurica var. kamtschatica
                                               Betula mandshurica var. szechuanica
                                             Betula maximowicziana
                                             Betula michauxii
                                             Betula minor
                                             Betula murrayana
                                             Betula nana
                                               Betula nana ssp. exilis
                                               Betula nana ssp. nana
                                               Betula nana ssp. perfiljevii
                                               Betula nana var. glandulifera
                                               Betula nana var. renifolia
                                               Betula nana var. sibirica
                                             Betula neoalaskana
                                               Betula neoalaskana var. kenaica
                                             Betula nigra
                                             Betula occidentalis
                                                   [Betula beeniana]
                                                   [Betula fontinalis]
                                                   [Betula occidentalis var. inopina]
                                                   [Betula papyrifera ssp. occidentalis]
                                                   [Betula papyrifera var. occidentalis]
                                               Betula occidentalis var. fecunda
                                             Betula odorata
                                             Betula papyrifera
                                               Betula papyrifera ssp. humilis
                                               Betula papyrifera var. commutata
                                               Betula papyrifera var. cordifolia
                                               Betula papyrifera var. elobata
                                               Betula papyrifera var. humilis
                                               Betula papyrifera var. kenaica
                                               Betula papyrifera var. macrostachya
                                               Betula papyrifera var. minor
                                               Betula papyrifera var. neoalaskana
                                               Betula papyrifera var. papyrifera
                                               Betula papyrifera var. pensilis
                                               Betula papyrifera var. subcordata
                                             Betula pendula
                                                   Betula pendula f. dalecarlica
                                             Betula perfiljevii
                                             Betula piperi
                                             Betula platyphylla
                                               Betula platyphylla var. japonica
                                               Betula platyphylla var. kamtschatica
                                               Betula platyphylla var. platyphylla
                                               Betula platyphylla var. szechuanica
                                             Betula populifolia
                                             Betula pubescens
                                               Betula pubescens ssp. borealis
                                               Betula pubescens ssp. pubescens
                                               Betula pubescens ssp. tortuosa
                                               Betula pubescens var. pubescens
                                             Betula pumila
                                               Betula pumila var. glabra
                                               Betula pumila var. glandulifera
                                               Betula pumila var. pumila
                                               Betula pumila var. renifolia
                                             Betula resinifera
                                             Betula saxophila
                                             Betula szechuanica
                                             Betula terrae-novae
                                             Betula tortuosa
                                             Betula uber
                                             Betula utahensis
                                             Betula utilis
                                             Betula verrucosa
                                             Betula x alpestris
                                             Betula x arbuscula
                                             Betula x caerulea
                                               Betula x caerulea var. caerulea
                                               Betula x caerulea var. grandis
                                             Betula x caerulea-grandis
                                             Betula x commixta
                                             Betula x dugleana
                                             Betula x dutillyi
                                             Betula x eastwoodiae
                                             Betula x hornei
                                             Betula x jackii
                                             Betula x neoborealis
                                             Betula x purpusii
                                             Betula x raymundii
                                             Betula x sandbergii
                                             Betula x sargentii
                                             Betula x sukaczewii
                                             Betula x ungavensis
                                             Betula x utahensis
                                             Betula x winteri
                                     Betula-alnus
                                             Betula-alnus maritima
                                     Carpinus
                                             Carpinus americana
                                             Carpinus betulus
                                               Carpinus betulus var. virginiana
                                             Carpinus caroliniana
                                               Carpinus caroliniana ssp. caroliniana
                                               Carpinus caroliniana ssp. virginiana
                                               Carpinus caroliniana var. virginiana
                                             Carpinus tropicalis
                                     Corylus
                                             Corylus americana
                                               Corylus americana var. indehiscens
                                             Corylus avellana
                                             Corylus californica
                                             Corylus chinensis
                                             Corylus colurna
                                               Corylus colurna var. chinensis
                                               Corylus colurna var. colurna
                                             Corylus cornuta
                                               Corylus cornuta ssp. californica
                                               Corylus cornuta ssp. cornuta
                                               Corylus cornuta var. californica
                                               Corylus cornuta var. cornuta
                                               Corylus cornuta var. glandulosa
                                             Corylus ferox
                                               Corylus ferox var. ferox
                                               Corylus ferox var. thibetica
                                             Corylus heterophylla
                                             Corylus maxima
                                             Corylus rostrata
                                               Corylus rostrata var. californica
                                             Corylus thibetica
                                     Duschekia
                                             Duschekia sinuata
                                             Duschekia viridis
                                     Ostrya
                                             Ostrya carpinifolia
                                             Ostrya chisosensis
                                             Ostrya guatemalensis
                                             Ostrya knowltoni
                                             Ostrya knowltonii
                                             Ostrya virginiana
                                               Ostrya virginiana var. chisosensis
                                               Ostrya virginiana var. lasia
                                               Ostrya virginiana var. virginiana
                                             Ostrya virginica