1
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Species
alaskana
Sarg.
syn. Betula neoalaskana
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2
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Species
alba
L.
common name:
bj�rk (Norwegian), white birch
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3
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Varietas
commutata
Regel
syn. Betula papyrifera var. commutata
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4
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Varietas
cordifolia
(Regel) Regel
syn. Betula papyrifera var. cordifolia
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5
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Species
alleghaniensis
Britt.
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6
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Varietas
alleghaniensis
common name:
yellow birch
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7
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Varietas
fallax
(Fassett) Brayshaw
syn. Betula alleghaniensis var. alleghaniensis
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8
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Varietas
macrolepis
(Fern.) Brayshaw
common name:
yellow birch
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9
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Species
andrewsii
A. Nels.
syn. Betula �utahensis
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10
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Species
beeniana
A. Nels.
syn. Betula occidentalis
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11
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Species
borealis
Spach
common name:
northern birch
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12
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Species
cordifolia
Regel
syn. Betula papyrifera var. cordifolia
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13
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Species
exilis
Sukatschev
syn. Betula nana
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14
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Species
fontinalis
Sarg.
syn. Betula occidentalis
common name:
spring birch
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15
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Species
glandulifera
(Regel) Butler
syn. Betula pumila var. glandulifera
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16
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Species
glandulosa
Michx.
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17
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Varietas
glandulifera
(Regel) Gleason
syn. Betula pumila var. glandulifera
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18
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Varietas
hallii
(T.J. Howell) C.L. Hitchc.
syn. Betula nana
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19
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Varietas
sibirica
(Ledeb.) Schneid.
syn. Betula nana
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20
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Species
kenaica
W.H. Evans
syn. Betula papyrifera var. kenaica
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21
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Species
lenta
L.
common name:
cherry birch, black birch, sweet birch
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22
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Varietas
uber
Ashe
syn. Betula uber
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23
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Species
lutea
Michx. f.
common name:
yellow birch
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24
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Varietas
fallax
Fassett
syn. Betula alleghaniensis var. alleghaniensis
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25
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Varietas
macrolepis
Fern.
syn. Betula alleghaniensis var. macrolepis
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26
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Species
mandshurica
(Regel) Nakai
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27
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Varietas
szechuanica
(Schneid.) Rehd.
syn. Betula platyphylla var. szechuanica
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28
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Species
michauxii
Sarg.
syn. Betula nana
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29
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Species
minor
(Tuckerman) Fern.
common name:
dwarf white birch
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30
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Species
murrayana
Barnes & Dancik
common name:
Murray's birch
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31
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Species
nana
L.
common name:
birch
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32
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Subspecies
exilis
(Sukatschev) Hult�n
syn. Betula nana
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33
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Varietas
glandulifera
(Regel) Boivin
syn. Betula pumila var. glandulifera
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34
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Varietas
renifolia
(Fern.) Boivin
syn. Betula pumila var. renifolia
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35
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Varietas
sibirica
Ledeb.
syn. Betula nana
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36
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Species
neoalaskana
Sarg.
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37
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Varietas
kenaica
(W.H. Evans) Boivin
syn. Betula papyrifera var. kenaica
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38
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Species
nigra
L.
common name:
river birch
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39
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40
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Varietas
fecunda
Fern.
syn. Betula �utahensis
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41
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Varietas
inopina
(Jepson) C.L. Hitchc.
syn. Betula occidentalis
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42
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Species
papyrifera
Marsh.
common name:
paperbark birch, white birch
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43
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Varietas
commutata
(Regel) Fern.
common name:
western paper birch
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44
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Varietas
cordifolia
(Regel) Fern.
common name:
mountain paper birch
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45
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Varietas
elobata
(Fern.) Sarg.
syn. Betula papyrifera var. papyrifera
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46
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Subspecies
humilis
(Regel) Hult�n
syn. Betula neoalaskana
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47
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Varietas
humilis
(Regel) Fern. & Raup
syn. Betula neoalaskana
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48
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Varietas
kenaica
(W.H. Evans) A. Henry
common name:
Kenai birch
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49
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Varietas
macrostachya
Fern.
syn. Betula papyrifera var. papyrifera
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50
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Varietas
minor
(Tuckerman) S. Wats. & Coult.
syn. Betula minor
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51
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Varietas
neoalaskana
(Sarg.) Raup
syn. Betula neoalaskana
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52
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Subspecies
occidentalis
(Hook.) Hult�n
syn. Betula occidentalis
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53
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Varietas
occidentalis
(Hook.) Sarg.
syn. Betula occidentalis
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54
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Varietas
papyrifera
common name:
paper birch
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55
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Varietas
pensilis
Fern.
syn. Betula papyrifera var. papyrifera
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56
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Varietas
subcordata
(Rydb.) Sarg.
syn. Betula �utahensis
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57
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Species
pendula
Roth
common name:
European white birch, silver birch
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58
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Species
piperi
Britt.
syn. Betula �utahensis
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59
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Species
platyphylla
Sukatschev
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60
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Varietas
platyphylla
common name:
Asian white birch
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61
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Varietas
szechuanica
Schneid.
common name:
Szechuan white birch
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62
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Species
populifolia
Marsh.
common name:
gray birch
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63
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Species
pubescens
Ehrh.
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64
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Subspecies
borealis
(Spach) A.& D. L�ve
syn. Betula borealis
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65
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Species
pumila
L.
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66
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Varietas
glabra
Regel
common name:
bog birch
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67
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Varietas
glandulifera
Regel
common name:
bog birch
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68
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Varietas
pumila
common name:
bog birch
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69
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Varietas
renifolia
Fern.
common name:
bog birch
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70
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Species
resinifera
Britt.
syn. Betula neoalaskana
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71
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Species
saxophila
Lepage
syn. Betula minor
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72
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Species
terrae-novae
Fern.
syn. Betula nana
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73
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Species
uber
(Ashe) Fern.
common name:
Virginia roundleaf birch
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74
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Species
verrucosa
Ehrh.
syn. Betula pendula
common name:
birch
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75
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Species
x arbuscula
Dugle
syn. Betula �eastwoodiae
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76
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Species
x caerulea
Blanch. (pro sp.)
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77
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Varietas
caerulea
common name:
blue birch
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78
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Varietas
grandis
Blanch. (pro nm.)
common name:
big blue birch
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79
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Species
x caerulea-grandis
Blanch.
syn. Betula �caerulea var. grandis
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80
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Species
x commixta
Sarg.
syn. Betula �utahensis
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81
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Species
x dugleana
Lepage
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82
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Species
x eastwoodiae
Sarg. (pro sp.)
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83
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Species
x hornei
Butler (pro sp.)
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84
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Species
x jackii
Schneid.
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85
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Species
x purpusii
Schneid.
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86
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Species
x sandbergii
Britt.
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87
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Species
x sargentii
Dugle
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88
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Species
x ungavensis
Lepage
syn. Betula �hornei
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89
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Species
x utahensis
Britt. (pro sp.)
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90
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Species
x winteri
Dugle
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