Vascular Plants of the Pacific Northwest
Betulaceae

Generated from PNW Herbaria database
June 23, 2018.

5 genus names
87 species/infraspecies names
(names highlighted in brown could not be resolved to an accepted name)

Index to Genera:

O: Ostrya,

Alnus
Alnus alnobetula (ID, MT, WA; 5; 1892-1897)
var. stenophylla (ID, MT, WA; 5; 1892-1897)
Alnus crispa (AK, BC, WA; 26; 1974-1995)
ssp. crispa (AK, BC, WA; 8; 1974-1995)
var. crispa (BC; 3; 1974-1979)
var. sinuata (BC; 15; 1979-1992)
Alnus glutinosa (BC, OR, WA; 7; 1921-2009)
Alnus hirsuta (BC; 1; 1986)
Alnus incana (AK, BC, ID, MT, OR, WA, YK; 1164; 1886-2018)
ssp. rugosa (AK, ID, WA, YK; 8; 1893-1992)
ssp. tenuifolia (AK, BC, ID, MT, OR, WA, YK; 804; 1886-2018)
var. rugosa (ID; 1; 2002)
Alnus incana × Alnus rubra (ID; 6; 1961-1978)
Alnus oblongifolia (ID; 1; 1899)
Alnus rhombifolia (BC, ID, MT, OR, WA; 253; 1881-2016)
Alnus rhombifolia × Alnus rubra (ID, OR; 2; 1974-2004)
Alnus rhombifolia × Alnus tenuifolia (ID; 3; 1975-1978)
Alnus rubra (AK, BC, ID, MT, OR, WA; 847; 1880-2017)
Alnus rubra × Alnus tenuifolia (ID; 5; 1960-1973)
Alnus serrulata (WA; 1; 1985)
Alnus simuata (BC; 1; 1972)
Alnus tenuifolia (WA; 2; 1889)
ssp. tenuifolia (WA; 2; 1889)
Alnus viridis (AK, BC, ID, MT, OR, WA, YK; 1838; 1868-2017)
ssp. crispa (AK, BC, MT, YK; 63; 1919-2013)
ssp. fruticosa (AK, BC, ID, MT, YK; 47; 1914-2016)
ssp. intermediate (AK, BC, ID, YK; 68; 1904-1976)
ssp. sinuata (AK, BC, ID, MT, OR, WA, YK; 1315; 1868-2017)
var. viridis (ID; 1; 2016)
Betula
Betula albosinensis (BC; 1; 1988)
Betula ×eastwoodiae (BC, MT; 7; 1937-2007)
Betula ×eastwoodie (AK; 1; 1950)
Betula elrodiana (MT; 3; 1908)
Betula ermanii (BC; 1; 1988)
Betula glandulosa (AK, BC, ID, MT, OR, WA, YK; 910; 1881-2017)
Betula glandulosa var. glandulosa × Betula glandulosa var. hallii (OR; 1; 1927)
var. rotundifolia (OR; 2; 1909)
Betula glandulosa × Betula neoalaskana (AK; 1; 2014)
Betula glandulosa × Betula occidentalis (BC; 1; 1971)
Betula glandulosa × Betula papyrifera (YK; 1; 1990)
Betula grossa (BC; 1; 1991)
Betula ×hornei (AK, BC; 2; 1902-1943)
Betula hybrids (AK; 102; 1926-2008)
Betula kenaica (AK, YK; 85; 1931-2014)
Betula kenaica × Betula nana (AK; 1; 1945)
Betula maximowicziana (BC; 1; 1987)
Betula microphylla (ID, OR, WA; 6; 1930-1965)
Betula nana (AK, BC, ID, MT, WA, YK; 378; 1900-2015)
ssp. exilis (AK, BC, YK; 46; 1928-2015)
Betula nana × Betula pumila (MT; 1; 1995)
Betula neoalaskana (AK, BC, YK; 93; 1899-2014)
Betula neoalaskana × Betula pumila var. glandulifera (BC; 1; 1971)
Betula nigra (BC; 1; ?)
Betula obovata (MT; 2; 1908)
Betula occidentalis (AK, BC, ID, MT, OR, WA, YK; 990; 1881-2016)
var. piperi (ID, WA; 10; 1893-1950)
var. vicid (MT; 1; 1938)
Betula occidentalis × Betula papyrifera (BC, ID; 2; 1971-1986)
Betula occientalis (MT; 1; 1952)
Betula papyirtera (BC, ID; 2; 1947-1997)
Betula papyrifera (AK, BC, ID, MT, OR, WA, YK; 652; 1889-2016)
var. alaskana (AK; 1; 1956)
Betula pendula (BC, ID, MT, OR, WA; 79; 1931-2016)
f. crispa (ID; 1; 1999)
Betula platyphylla (BC; 1; 1988)
Betula populifolia (AK, WA; 3; 1956-2001)
Betula pubescens (BC, ID, OR, WA; 20; 1929-2014)
ssp. pubescens (BC, ID, WA; 9; 1937-2013)
Betula pumila (AK, BC, ID, MT, OR, WA, YK; 132; 1883-2017)
f. hallii (BC; 1; 1990)
Betula subcordata (ID; 1; 1892)
Betula ×uliginosa (BC; 1; 1914)
Betula ×utahensis (AK, BC, ID, OR, WA; 104; 1892-2009)
Betula utilis (BC; 2; 1988-1991)
Betula ×winteri (BC; 2; 1939-1959)
Carpinus
Carpinus betulus (BC, WA; 6; 1954-2010)
Corylus
Corylus americana (WA; 1; 2003)
Corylus avellana (BC, ID, OR, WA; 59; 1949-2018)
var. contorta (ID; 1; 1973)
Corylus colurna (BC; 2; 1954-1961)
Corylus cornuta (BC, ID, MT, OR, WA; 496; 1880-2017)
ssp. californica (BC, ID, OR, WA; 321; 1880-2014)
ssp. cornuta (BC, ID, MT, OR, WA; 30; 1897-2015)
Corylus maxima (BC; 1; 1972)
var. purpurea (BC; 1; 1972)
Ostrya
Ostrya carpinifolia (BC; 1; 1983)
Ostrya virginiana (WA; 1; 1901)