| Betulaceae |
|
Betula papyrifera
| Marshall | Arbust. Amer. 19 | 1785 |
| Betulaceae |
|
Betula papyrifera var. andrewsii
| Daniels | Fl. Boulder Colorado 101 | 1911 |
| Betulaceae |
|
Betula papyrifera var. communis
| Regel | Handb. Laubholzben. 1: 115 | 1904 |
| Betulaceae |
|
Betula papyrifera subsp. commutata
| (Regel) A.E. Murray | Kalmia 12: 18 | 1982 |
| Betulaceae |
|
Betula papyrifera var. commutata
| (Regel) Fernald | Rhodora 47(562): 312 | 1945 |
| Betulaceae |
|
Betula papyrifera fo. cordifolia
| C.K. Schneid. | Handb. Laubholzben. 1: 115 | 1904 |
| Betulaceae |
|
Betula papyrifera subsp. cordifolia
| (Regel) A.E. Murray | Kalmia 12: 18 | 1982 |
| Betulaceae |
|
Betula papyrifera var. cordifolia
| (Regel) Regel | Bull. Soc. Imp. Naturalistes Moscou 38: 401 | 1865 |
| Betulaceae |
|
Betula papyrifera var. cordifolia
| (Regel) Fernald | Rhodora 3: 173 | 1901 |
| Betulaceae |
|
Betula papyrifera fo. coriacea
| Fernald & Wiegand | Rhodora 25(300): 209-210 | 1923 |
| Betulaceae |
|
Betula papyrifera fo. elobata
| (Fernald) B. Boivin | Naturaliste Canad. 94(2): 231 | 1967 |
| Betulaceae |
|
Betula papyrifera var. elobata
| (Fernald) Sarg. | J. Arnold Arbor. 1(1): 63 | 1919 |
| Betulaceae |
*
|
Betula papyrifera subsp. humilis
| (Regel) A.E. Murray | Kalmia 12: 18 | 1982 |
| Betulaceae |
|
Betula papyrifera subsp. humilis
| (Regel) Hultén | Fl. Alaska 367 | 1968 |
| Betulaceae |
|
Betula papyrifera var. humilis
| (Regel) Fernald & Raup | Rhodora 47(562): 321 | 1945 |
| Betulaceae |
|
Betula papyrifera subsp. kenaica
| (W.H. Evans) A.E. Murray | Kalmia 12: 18 | 1982 |
| Betulaceae |
|
Betula papyrifera var. kenaica
| (W.H. Evans) A. Henry | Trees Gr. Br. Irel. 4: 984 | 1909 |
| Betulaceae |
|
Betula papyrifera fo. longipes
| Fernald | Rhodora 47(562): 319, pl. 968, f. 4 | 1945 |
| Betulaceae |
|
Betula papyrifera var. lyalliana
| Koehne | Handb. Laubholzben. 55 | 1903 |
| Betulaceae |
|
Betula papyrifera fo. macrostachya
| | | |
| Betulaceae |
|
Betula papyrifera var. macrostachya
| Fernald | Rhodora 47(562): 318-319, pl. 968, f. 1-3 | 1945 |
| Betulaceae |
|
Betula papyrifera var. minor
| Tuck. | Amer. J. Sci. Arts 45: 31 | 1843 |
| Betulaceae |
|
Betula papyrifera var. montanensis
| (Rydb. ex B.T. Butler) Sarg. | J. Arnold Arbor. 1: 64 | 1919 |
| Betulaceae |
|
Betula papyrifera fo. nana
| B. Boivin | Naturaliste Canad. 94(2): 231 | 1967 |
| Betulaceae |
|
Betula papyrifera subsp. neoalaskana
| (Sarg.) A.E. Murray | Kalmia 13: 4 | 1983 |
| Betulaceae |
|
Betula papyrifera var. neoalaskana
| (Sarg.) Raup | Contr. Arnold Arbor. 6: 152 | 1934 |
| Betulaceae |
|
Betula papyrifera subsp. occidentalis
| (Hook.) Hultén | Acta Univ. Lund., n.s., 40(1): 582 | 1944 |
| Betulaceae |
|
Betula papyrifera var. occidentalis
| (Hook.) Sarg. | J. Arnold Arbor. 1(1): 63 | 1919 |
| Betulaceae |
|
Betula papyrifera fo. papyrifera
| | | |
| Betulaceae |
|
Betula papyrifera var. papyrifera
| | | |
| Betulaceae |
|
Betula papyrifera var. pensilis
| Fernald | Rhodora 47(562): 318, pl. 967 | 1945 |
| Betulaceae |
|
Betula papyrifera var. recessa
| Lepage | Naturaliste Canad. 89: 115 | 1962 |
| Betulaceae |
|
Betula papyrifera subsp. subcordata
| (Rydb. ex B.T. Butler) A.E. Murray | Kalmia 12: 18 | 1982 |
| Betulaceae |
|
Betula papyrifera var. subcordata
| (Rydb. ex B.T. Butler) Sarg. | J. Arnold Arbor. 1(1): 63 | 1919 |