Vascular Plants of the Pacific Northwest
Rosaceae

Generated from PNW Herbaria database
June 23, 2018.

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

Index to Genera:

G: Geum

Acaena
Acaena novae-zelandiae (OR, WA; 14; 1951-2010)
Acaena trifida (WA; 1; 1919)
Acomastylis
Acomastylis depressa (WA; 3; 1933-1935)
Adenostoma
Adenostoma elegans (YK; 1; 1957)
Adenostoma fasciculatum (BC; 1; 1988)
Agrimonia
Agrimonia eupatoria (WA; 1; 2000)
Agrimonia gryposepala (BC, MT, OR; 35; 1882-2010)
Agrimonia repens (MT, WA; 5; 1924-2000)
Agrimonia striata (BC, ID, MT; 50; 1897-2014)
Alchemilla
Alchemilla conjuncta (BC; 1; 1986)
Alchemilla erythropoda (BC; 1; 1989)
Alchemilla glabra (AK; 1; 1979)
Alchemilla mollis (BC, MT, WA; 13; 1980-2014)
Alchemilla monticola (AK, BC, MT; 4; 1945-2014)
Alchemilla subcrenata (BC; 5; 1961-1992)
Alchemilla viridiflora (BC; 1; 2008)
Alchemilla vulgaris (AK; 2; 1979-2002)
Amelanchier
Amelanchier alnifolia (AK, BC, ID, MT, OR, WA, YK; 3139; 1875-2018)
var. alnifolia (AK, BC, ID, MT, OR, WA; 586; 1875-2018)
var. basalticola (OR; 2; 1927-1941)
var. hemptulipensis (BC; 1; 1994)
var. humptulipensis (BC, OR, WA; 44; 1897-2007)
var. pumila (BC, ID, MT, OR, WA; 239; 1896-2016)
var. semiintegrifolia (BC, ID, MT, OR, WA; 637; 1880-2015)
var. vasaltuala (OR; 1; 1936)
Amelanchier amelanchier (WA; 2; 1959-1965)
var. pumilis (WA; 2; 1959-1965)
Amelanchier basaltica (ID; 1; 1951)
Amelanchier canadensis (BC, OR; 2; 1882-1983)
var. alnifolia (OR; 1; 1882)
Amelanchier caroliniensis (WA; 1; 1966)
Amelanchier cusickii (BC, ID, MT, OR, WA; 460; 1882-2015)
Amelanchier elliptica (ID, MT; 2; 1914-1937)
Amelanchier laevis (BC, WA; 8; 1983-2014)
Amelanchier lamarckii (BC; 12; 1995-2012)
Amelanchier pallida (ID, OR; 79; 1889-2013)
Amelanchier utahensis (ID, MT, OR, WA; 375; 1889-2017)
Amelasorbus
×Amelasorbus jackii (ID, OR; 3; 1915-1961)
Amelenchier
Amelenchier alnifolia (WA; 2; 1923-1982)
var. alnifolia (WA; 1; 1923)
Aphanes
Aphanes arvensis (BC, OR, WA; 57; 1878-2017)
Aphanes australis (BC, OR, WA; 83; 1939-2017)
Aphanes occidentalis (BC, OR, WA; 153; 1879-2018)
Argentina
Argentina grandis (WA; 1; 1923)
Aronia
Aronia arbutifolia (ID; 1; 1974)
Aronia melanocarpa (WA; 6; 2008)
Aruncus
Aruncus dioicus (AK, BC, ID, OR, WA, YK; 500; 1880-2016)
var. acuminatus (AK, ID, OR, WA; 120; 1880-2015)
var. dioicus (OR, WA; 4; 1902-1968)
var. vulgaris (AK, BC, OR, WA, YK; 331; 1883-2013)
Aruncus sylvester (WA; 1; 1893)
var. americana (WA; 1; 1893)
Batidaea
Batidaea peramoena (ID; 1; 1895)
Batidaea viburnifolia (BC; 1; 1904)
Cerasus
Cerasus trichopetala (MT; 3; 1894)
Cerasus tricopetala (MT; 1; 1894)
Cerasus vulgaris (WA; 1; 2002)
Cercocarpus
Cercocarpus betuloides (OR; 112; 1881-2016)
var. betuloides (OR; 15; 1881-2016)
var. macrourus (OR; 66; 1887-2010)
Cercocarpus betuloides × Cercocarpus ledifolius (OR; 2; 1976-2009)
Cercocarpus ledifolius (ID, MT, OR, WA; 664; 1880-2016)
var. hypolencus (ID, MT; 6; 1936-1963)
var. intermontanus (ID, OR, WA; 143; 1885-2016)
var. intricatus (MT; 4; 1883-1979)
var. ledifolius (ID, MT, OR; 282; 1880-2016)
Cercocarpus ledifolius × Cercocarpus montanus (OR; 2; 2010)
Cercocarpus montanus (ID, MT, OR; 19; 1902-2006)
Cercocarpus villosus (MT; 1; 1892)
Chaenomeles
Chaenomeles japonica (ID, OR, WA; 4; 1881-2015)
Chaenomeles speciosa (ID, OR, WA; 7; 1991-2012)
Chamaebatiaria
Chamaebatiaria millefolium (ID, OR; 144; 1872-2017)
Chamaerhodos
Chamaerhodos erecta (AK, BC, MT, YK; 158; 1887-2013)
Comarum
Comarum palustre (AK, BC, ID, MT, OR, WA, YK; 989; 1879-2017)
Contoneaster
Contoneaster lucidus (ID; 1; 2007)
Cotoneaster
Cotoneaster acutifolius (ID; 1; 1973)
Cotoneaster atropurpureus (WA; 11; 2005-2007)
Cotoneaster bullatus (BC; 4; 1989-1990)
Cotoneaster cochleatus (OR; 1; 2009)
Cotoneaster conspicuus (WA; 7; 2000-2015)
Cotoneaster ×crispii (BC; 4; 2001-2006)
Cotoneaster dammeri (BC, WA; 13; 1973-2014)
Cotoneaster dammeri × Cotoneaster salicifolius (WA; 6; 1973-2007)
Cotoneaster dielsianus (BC, OR, WA; 56; 1973-2017)
Cotoneaster divaricatus (BC, ID, OR, WA; 32; 1997-2017)
Cotoneaster fangianus (OR; 1; 2012)
Cotoneaster franchetii (BC, OR, WA; 129; 1982-2017)
Cotoneaster frigidus (BC; 1; 2014)
Cotoneaster gamblei (WA; 17; 1999-2016)
Cotoneaster hjelmqvistii (BC, OR; 15; 2004-2016)
Cotoneaster horizontalis (AK, BC, OR, WA; 74; 1966-2017)
Cotoneaster induratus (OR; 3; 1937-2004)
Cotoneaster integrifolius (OR; 6; 2007-2010)
Cotoneaster lacteus (BC, OR, WA; 59; 1982-2017)
Cotoneaster lesliei (OR, WA; 8; 1973-2003)
Cotoneaster lucidus (AK, BC, ID, MT, WA, YK; 30; 1989-2016)
Cotoneaster magnificus (WA; 2; 2016-2017)
Cotoneaster mairei (BC, WA; 12; 2000-2009)
Cotoneaster miniatus (WA; 5; 2004-2013)
Cotoneaster monopyrenus (WA; 3; 2007-2008)
Cotoneaster mucronatus (OR; 2; 2003-2004)
Cotoneaster nanshan (WA; 5; 2000-2006)
Cotoneaster nitens (OR, WA; 23; 1999-2011)
Cotoneaster pannosus (OR, WA; 7; 2000-2008)
Cotoneaster perpusillus (BC; 1; 2008)
Cotoneaster rehderi (AK, BC, OR, WA; 60; 1986-2017)
Cotoneaster salicifolius (BC, WA; 27; 1996-2016)
var. henryanus (BC; 1; 2006)
var. rugosa (BC; 1; 2011)
var. rugosus (BC; 1; 2013)
Cotoneaster simonsii (AK, BC, OR, WA; 76; 1969-2018)
Cotoneaster sternianus (BC, OR, WA; 19; 1988-2008)
Cotoneaster ×suecicus (BC, OR, WA; 5; 2000-2007)
Cotoneaster tebbutus (WA; 2; 2000)
Cotoneaster tengyuehensis (OR, WA; 13; 2000-2017)
Cotoneaster transens (WA; 1; 2000)
Cotoneaster vestitus (WA; 8; 2000-2013)
Cotoneaster villosulus (WA; 11; 1999-2006)
Cotoneaster wardii (WA; 2; 2000)
Cotoneaster ×watereri (BC, WA; 8; 1999-2015)
Cotoneaster zabelii (WA; 1; 2016)
Crataegomespilus
×Crataegomespilus grandiflora (BC; 1; 1990)
Crataegus
Crataegus atrovirens (BC; 3; 2000-2015)
Crataegus azarolus (WA; 1; 1965)
Crataegus brevispina (ID, WA; 3; 1925-1942)
Crataegus castlegarensis (BC, ID, MT, OR, WA; 113; 1908-2016)
Crataegus chrysocarpa (BC, ID, MT, OR, WA; 279; 1885-2016)
var. chrysocarpa (BC, ID, MT, WA; 33; 1900-2016)
var. piperi (BC, ID, MT, OR, WA; 96; 1885-2016)
Crataegus chrysocarpa × Crataegus douglasii (WA; 1; 2004)
Crataegus coccinea (MT; 1; 1886)
Crataegus ×cogswellii (OR; 2; 2016)
Crataegus ×collicola (WA; 1; 1977)
Crataegus douglasii (BC, ID, MT, OR, WA; 1069; 1884-2018)
ssp. suksdorfii (BC; 1; 1979)
var. castlegarensis (WA; 2; 2006)
Crataegus douglasii var. douglasii × Crataegus douglasii var. suksdorfii (ID; 2; 1982-1986)
var. glabella (OR; 1; 2003)
Crataegus douglasii × Crataegus monogyna (OR; 2; 1977)
Crataegus enderbyensis (BC; 17; 1993-2015)
Crataegus gaylussacia (AK, BC, ID, MT, OR, WA; 323; 1886-2016)
Crataegus heterophylla (OR; 2; 2016)
Crataegus laevigata (BC, WA; 7; 1990-2003)
Crataegus macracantha (BC, ID, MT, OR, WA; 134; 1894-2016)
var. nitens (MT; 1; 1996)
var. occidentalis (BC, ID, MT, OR, WA; 55; 1894-2010)
Crataegus macrosperma (MT; 1; 2007)
Crataegus mollis (BC; 1; 1987)
Crataegus monogyna (BC, ID, MT, OR, WA; 201; 1902-2017)
Crataegus monogyna × Crataegus gaylussacia (OR, WA; 20; 2001-2013)
Crataegus okanaganensis (BC, ID, WA; 76; 1889-2016)
var. longispina (BC; 2; 2016)
var. okanaganensis (BC, WA; 2; 2016)
var. wellsii (BC, WA; 27; 1993-2016)
Crataegus okennonii (BC, WA; 17; 2001-2016)
Crataegus orbicularis (BC; 15; 1994-2016)
Crataegus oxyacantha (ID, WA; 8; 1911-1980)
Crataegus persimilis (BC; 1; 1985)
Crataegus phaenopyrum (ID, OR, WA; 29; 1982-2016)
Crataegus phippsii (BC, MT, WA; 24; 1993-2016)
Crataegus rivularis (ID, MT, WA; 41; 1882-2004)
Crataegus sanguinea (WA; 3; 2003-2016)
Crataegus selkirkensis (BC, MT; 2; 1993)
Crataegus sheila-phippsiae (BC; 4; 2002-2016)
var. sheila-phippsiae (BC; 2; 2016)
Crataegus shuswapensis (BC; 16; 1994-2016)
Crataegus tenuior (MT; 1; 1895)
Crataegus wattiana (WA; 1; 2003)
var. wattiana (WA; 1; 2003)
Crataegus williamsii (ID, MT; 21; 1892-2004)
Dasiphora
Dasiphora fruticosa (AK, BC, ID, MT, OR, WA, YK; 1201; 1882-2017)
Dryas
Dryas ajanensis (AK, BC, YK; 32; 1946-2017)
ssp. beringensis (AK, BC, YK; 21; 1946-2017)
Dryas alaskensis (AK, YK; 182; 1927-2015)
Dryas crenulata (AK, ID, YK; 9; 1902-2007)
var. octopetala (AK; 1; 1928)
Dryas drummondii (AK, BC, MT, OR, WA, YK; 268; 1889-2016)
Dryas hookeriana (AK, BC, ID, MT, OR, WA, YK; 295; 1890-2017)
Dryas incisa (AK, YK; 35; 1939-2014)
ssp. sylvatica (YK; 1; 2000)
Dryas integrefolia (BC; 1; 1914)
var. canescens (BC; 1; 1914)
Dryas integrifolia (AK, BC, MT, YK; 456; 1800-2015)
ssp. integrifolia (AK, BC, YK; 71; 1960-2014)
ssp. sylvatica (AK, BC, YK; 17; 1914-2008)
var. integrifolia (AK; 2; 1979)
Dryas integrifolia var. integrifolia × Dryas octopetala var. octopetala (AK; 1; 1979)
Dryas integrifolia × Dryas octopetala (BC; 1; 2008)
Dryas octopetala (AK, BC, ID, MT, OR, WA, YK; 362; 1893-2017)
Drymocallis
Drymocallis albida (OR; 1; 1928)
var. reflexa (OR; 1; 1928)
Drymocallis amplifolia (WA; 3; 1893-1931)
Drymocallis arguta (AK, BC, ID, MT, OR, WA, YK; 860; 1884-2018)
Drymocallis ashlandica (OR, WA; 37; 1887-2008)
Drymocallis campanulata (ID, OR, WA; 34; 1894-2012)
Drymocallis corymbosa (MT, WA; 2; 1897-1932)
var. intermedia (WA; 1; 1932)
Drymocallis fissa (ID, MT, OR; 10; 1953-2007)
Drymocallis foliosa (MT; 1; 1896)
Drymocallis glabrata (MT, WA; 2; 1930-2011)
var. glabrata (MT; 1; 2011)
var. intermedia (WA; 1; 1930)
Drymocallis glandulosa (BC, ID, MT, OR, WA; 2115; 1880-2018)
ssp. glabrata (BC, ID, MT, OR, WA; 426; 1889-2018)
ssp. glandulosa (BC, ID, MT, OR, WA; 461; 1886-2017)
ssp. pseudorupestris (BC, ID, MT, OR, WA; 484; 1881-2017)
var. pseudorupestris (MT; 2; 1933-2014)
Drymocallis lactea (ID, MT, OR, WA; 179; 1882-2017)
Drymocallis oregana (WA; 1; 1932)
Drymocallis pseudorupestris (ID, MT; 5; 1896-2013)
var. intermedia (ID, MT; 5; 1896-2013)
Drymocallis pumila (ID, OR; 4; 1901-1938)
var. pseudorupestris (ID; 1; 1938)
Drymocallis rhomboidea (OR; 45; 1887-2016)
Drymocallis valida (WA; 1; 1931)
Drymocallis viscosa (WA; 1; 1897)
Drymocallis visocosa (BC, WA; 4; 1932-1938)
var. pseudorupestris (BC; 1; 1938)
Duchesnea
Duchesnea indica (BC, OR, WA; 16; 1940-2017)
Eubus
Eubus leucodermis (WA; 1; 1898)
Fallugia
Fallugia paradoxa (ID; 1; 2012)
Filipendula
Filipendula occidentalis (OR, WA; 59; 1882-2001)
Filipendula ×purpurea (BC; 1; 2015)
Filipendula ulmaria (BC; 3; 1987)
Filipendula vulgaris (BC, OR; 3; 1976-2007)
Fragaria
Fragaria ×ananassa (AK, BC, ID, MT, OR, WA; 163; 1881-2015)
ssp. ananassa (BC, OR, WA; 5; 1892-2015)
ssp. cuneifolia (BC, ID, MT, OR, WA; 139; 1881-2015)
Fragaria bracteata (OR, WA; 4; 1914-1938)
var. crinita (OR, WA; 4; 1914-1938)
Fragaria cascadensis (OR; 42; 1914-2016)
Fragaria chiloensis (AK, BC, ID, OR, WA, YK; 375; 1888-2017)
ssp. lucida (BC, OR, WA; 12; 1932-2005)
Fragaria chiloensis ssp. lucida > Fragaria cuneifolia (BC; 1; 1957)
ssp. pacifica (AK, BC, OR, WA; 56; 1896-2017)
Fragaria chiloensis × Fragaria virginiana (BC, WA; 8; 1939-1985)
Fragaria crinita (OR; 1; 1926)
var. crinita (OR; 1; 1926)
Fragaria cuneifolia (OR; 1; 1936)
var. crinita (OR; 1; 1936)
Fragaria ovalis (ID, MT; 3; 1914-1941)
var. glauca (ID, MT; 3; 1914-1941)
Fragaria vesca (AK, BC, ID, MT, OR, WA; 1531; 1872-2017)
f. bracteata (BC; 2; 1977-1991)
f. helleri (ID, OR, WA; 6; 1892-1940)
ssp. americana (BC, ID, MT; 11; 1931-2002)
ssp. bracteata (AK, BC, ID, MT, OR, WA; 818; 1872-2015)
ssp. californica (BC, ID, OR, WA; 31; 1901-2017)
ssp. vesca (ID, WA; 3; 1966-2016)
Fragaria vesca var. bracteata × Fragaria vesca var. crinita (ID; 1; 1969)
var. clinita (OR; 1; 1998)
Fragaria virginiana (AK, BC, ID, MT, OR, WA, YK; 1618; 1883-2018)
ssp. glauca (AK, BC, ID, MT, OR, WA, YK; 273; 1892-2018)
ssp. platypetala (BC, ID, MT, OR, WA, YK; 589; 1883-2017)
ssp. virginiana (BC; 1; 1949)
var. virginiana (ID; 1; 2010)
Fragaria yukonensis (BC, YK; 2; 1899-1960)
Geum
Geum aleppicum (AK, BC, ID, MT, OR, WA, YK; 254; 1885-2017)
Geum arguta (BC; 1; 1971)
Geum biflorum (WA; 1; 1996)
Geum calthifolium (AK, BC; 212; 1891-2013)
Geum calthifolium × Geum rossii (AK; 1; 1935)
Geum canadense (MT; 11; 1995-2010)
Geum depressum (WA; 1; 1935)
Geum filipes (ID; 1; 1916)
Geum glaciale (AK, YK; 132; 1919-2015)
Geum ×macranthum (AK; 5; 1980-1996)
Geum macrophyllum (AK, BC, ID, MT, OR, WA, YK; 1674; 1882-2017)
var. macrophyllum (AK, BC, ID, MT, OR, WA; 234; 1887-2015)
var. perincisum (AK, BC, ID, MT, OR, WA, YK; 566; 1885-2017)
Geum macrophyllum × Geum urbanum (OR, WA; 4; 2011-2016)
Geum palustris (YK; 1; 1970)
Geum rivale (BC, ID, MT, OR, WA; 125; 1886-2009)
Geum rossii (AK, BC, ID, MT, OR, WA, YK; 480; 1897-2015)
var. depressum (MT, WA; 12; 1931-2014)
var. rossii (AK, ID, MT, YK; 10; 1897-2002)
var. turbinatum (AK, ID, MT, OR, WA; 185; 1897-2012)
Geum schofieldii (BC; 15; 1957-2003)
Geum triflorum (BC, ID, MT, OR, WA, YK; 1930; 1822-2017)
ssp. triflorum (YK; 1; 1960)
var. ciliatum (BC, ID, MT, OR, WA; 995; 1881-2016)
var. triflorum (BC, ID, MT, OR, WA; 244; 1924-2015)
Geum urbanum (ID, OR, WA; 41; 1970-2017)
Heteromeles
Heteromeles arbutifolia (OR; 2; 1949-2007)
Holodiscus
Holodiscus ariaefolius (MT; 1; 1924)
Holodiscus discolor (BC, ID, MT, OR, WA; 1287; 1879-2017)
var. discolor (ID, OR, WA; 211; 1879-2016)
var. dumosus (ID, MT, OR; 140; 1884-2012)
Holodiscus microphyllus (ID, OR; 305; 1881-2015)
var. glabrescens (ID, OR; 242; 1881-2013)
var. microphyllus (ID, OR; 55; 1918-2015)
Horkelia
Horkelia bolanderi (OR; 1; 1986)
Horkelia californica (WA; 1; 1932)
Horkelia capitata (OR; 1; 1936)
var. capitata (OR; 1; 1936)
Horkelia congesta (OR; 157; 1881-2009)
ssp. intermedia (OR; 1; 1933)
var. congesta (OR; 49; 1881-1986)
var. nemorosa (OR; 70; 1881-2009)
Horkelia daucifolia (OR; 37; 1887-2014)
var. caruifolia (OR; 16; 1887-1996)
var. daucifolia (OR; 2; 1887-1927)
Horkelia fusca (ID, OR, WA; 484; 1881-2017)
Horkelia fusca ssp. capitata × Horkelia fusca ssp. parviflora (ID; 1; 1944)
var. capitata (ID, OR, WA; 98; 1886-2011)
var. filicoides (OR; 17; 1902-1956)
var. fusca (OR, WA; 46; 1881-2014)
var. parviflora (ID, OR; 195; 1885-2017)
Horkelia hendersonii (OR; 43; 1886-2000)
Horkelia howellii (OR; 53; 1884-2003)
Horkelia latiloba (OR; 1; 1887)
Horkelia sericata (OR; 77; 1884-2013)
Horkelia tridentata (OR; 23; 1884-2016)
var. flavescens (OR; 2; 1933)
var. tridentata (OR; 10; 1889-2016)
Horkelia tweedyi (WA; 2; 1934-1935)
Horkelia utahensis (WA; 1; 1911)
Ivesia
Ivesia baileyi (ID, OR; 133; 1885-2014)
ssp. baileyi (OR; 1; 1953)
var. baileyi (ID, OR; 5; 1953-1996)
var. beneolens (ID, OR; 67; 1885-2013)
Ivesia gordonii (ID, MT, OR, WA; 444; 1882-2016)
var. gordonii (ID, MT, OR, WA; 55; 1896-2005)
var. ursinorum (ID, OR; 55; 1885-2012)
var. wasatchensis (ID; 4; 1978-2010)
Ivesia multifoliolata (MT; 1; 1899)
Ivesia rhypara (OR; 52; 1973-2011)
var. rhypara (OR; 18; 1973-2005)
var. shellyi (OR; 18; 1984-1987)
Ivesia shellyi (OR; 1; 1985)
Ivesia shockleyi (OR; 16; 1937-2008)
var. shockleyi (OR; 11; 1937-2002)
Ivesia tweedyi (ID, MT, WA; 86; 1883-2015)
Kelseya
Kelseya uniflora (ID, MT; 68; 1888-2016)
Kerria
Kerria japonica (ID, WA; 4; 1926-2002)
Luetkea
Luetkea pectinata (AK, BC, ID, MT, OR, WA, YK; 714; 1879-2015)
Luetkea pulvinata (AK; 1; 1956)
Malus
Malus angustifolia (ID; 1; ?)
Malus ×asiatica (BC; 1; 1962)
Malus atrosanguinea × Malus domestica (WA; 2; 2002)
Malus baccata (WA; 8; 2002-2003)
Malus baccata × Malus domestica (WA; 1; 1999)
Malus coronaria (BC, WA; 2; 1921-1967)
Malus ×dawsoniana (OR, WA; 28; 1998-2013)
Malus ×dawsoniana × Malus fusca (WA; 1; 2003)
Malus domestica × Malus sieboldii (OR; 1; 2004)
Malus fusca (AK, BC, ID, OR, WA; 447; 1880-2017)
Malus fusca × Malus prunifolia (WA; 1; 2002)
Malus hupehensis (BC, OR, WA; 10; 1999-2015)
f. rosea (OR; 1; 2003)
Malus niedzwetzkyana × Malus zumi (WA; 1; 2003)
Malus prunifolia (BC, OR, WA; 17; 2001-2013)
var. prunifolia (OR; 1; 2003)
var. rinki (WA; 2; 2002-2003)
Malus prunifolia × Malus sieboldii (WA; 3; 2002-2003)
Malus pumila (BC, ID, MT, OR, WA; 159; 1893-2018)
Malus ×purpurea (BC; 1; 1961)
Malus ×robusta (WA; 4; 2002)
Malus ×sublobata (WA; 2; 2002)
Malus toringo (OR, WA; 37; 1998-2014)
Malus ×zumi (WA; 2; 2002)
Mespilus
Mespilus germanica (WA; 3; 1940-2004)
Oemleria
Oemleria cerasiformis (BC, OR, WA; 436; 1809-2018)
Opulaster
Opulaster malvaceus (MT, WA; 3; 1893-1929)
Peraphyllum
Peraphyllum ramosissimum (ID, OR; 114; 1885-2016)
Petrophytum
Petrophytum caespitosum (ID, MT, WA; 181; 1899-2016)
ssp. caespitosum (ID, MT; 2; 1979-1998)
Petrophytum cinerascens (WA; 17; 1897-2009)
Petrophytum hendersonii (WA; 63; 1890-2011)
Photinia
Photinia beauverdiana (WA; 1; 2007)
Photinia davidiana (WA; 18; 1999-2017)
var. davidiana (WA; 3; 2015-2016)
Photinia ×fraseri (WA; 1; 1974)
Photinia serratifolia (OR; 2; 2011-2016)
Photinia villosa (WA; 6; 2000-2007)
Photonia
Photonia melanocarpa (WA; 1; 2008)
Physocarpus
Physocarpus alternans (ID; 6; 1936-1997)
Physocarpus capitatus (AK, BC, ID, OR, WA; 491; 1881-2016)
Physocarpus malvaceus (BC, ID, MT, OR, WA; 960; 1882-2017)
Physocarpus monogynus (MT; 57; 1891-2009)
Physocarpus opulifolius (ID, MT, OR, WA; 7; 1892-2016)
Physocarpus pubescens (MT; 1; ?)
Potentiall
Potentiall dissecta (MT; 1; 1902)
var. glaucophylla (MT; 1; 1902)
Potentilla
Potentilla anachoretica (AK; 1; 1961)
Potentilla anglica (BC, OR, WA; 13; 1922-2011)
Potentilla anserina (AK, BC, ID, MT, OR, WA, YK; 1236; 1881-2016)
ssp. anserina (AK, BC, ID, OR, WA, YK; 100; 1894-2016)
ssp. egedii (AK, BC, OR, WA, YK; 162; 1896-2014)
ssp. pacifica (AK, BC, OR, WA; 226; 1881-2013)
ssp. yukonensis (AK, YK; 9; 1903-2007)
var. pacifica (WA; 5; 1940-1977)
Potentilla ×arctoalaskensis (AK; 1; 1978)
Potentilla arenosa (AK, BC, YK; 200; 1926-2013)
ssp. arenosa (AK, BC, YK; 13; 1974-2010)
ssp. chamissonis (AK, YK; 3; 1976-2005)
Potentilla argentea (BC, ID, MT, OR, WA; 140; 1908-2016)
Potentilla arguta (BC, OR; 2; 1979-2001)
ssp. convillaria (BC; 1; 1979)
var. arguta (OR; 1; 2001)
Potentilla bicrenata (MT; 1; 1962)
Potentilla biennis (BC, ID, MT, OR, WA, YK; 443; 1871-2016)
Potentilla biflora (AK, BC, YK; 192; 1900-2017)
Potentilla bimundorum (AK, YK; 41; 1924-2015)
Potentilla bipinnatifida (AK, BC, ID, MT, YK; 67; 1892-2016)
Potentilla blasckeana (WA; 1; 1931)
var. gracilis (WA; 1; 1931)
Potentilla ×borealis (YK; 1; 1984)
Potentilla brevifolia (ID, MT, OR, WA; 80; 1886-2016)
Potentilla breweri (OR, WA; 101; 1886-2007)
var. bruceae (OR, WA; 3; 1936-1949)
var. viridis (OR; 2; 1946-1959)
Potentilla breweri × Potentilla drummondii (WA; 1; 1956)
Potentilla breweri × Potentilla versicolor (OR; 1; 1959)
Potentilla bruceae (OR, WA; 14; 1896-2006)
Potentilla brunnescens (ID; 1; 1946)
var. brunnescens (ID; 1; 1946)
Potentilla brunnescens × Potentilla gracilis var. flabelliformis (MT; 1; 2014)
Potentilla canadensis (ID; 1; 1941)
Potentilla concinna (ID, MT, OR; 57; 1897-2016)
var. concinna (ID, MT; 42; 1902-2014)
var. divisa (MT; 1; 1964)
Potentilla convallaria (WA; 1; 1939)
var. pseudorupestris (WA; 1; 1939)
Potentilla crebridens (AK, YK; 64; 1957-2014)
ssp. hemicryophila (AK, YK; 9; 1988-2014)
Potentilla dascia (OR, WA; 2; 1869-1931)
var. pumallis (WA; 1; 1931)
Potentilla dichroa (MT; 1; 1901)
Potentilla dissecta (BC, ID, MT; 4; 1887-1931)
var. glaucophylla (ID, MT; 2; 1931)
Potentilla diversifolia (BC; 2; 2003-2008)
ssp. diversifolia (BC; 2; 2003-2008)
Potentilla diversifolia × Potentilla gracilis (OR; 1; 1993)
Potentilla drummondii (AK, BC, ID, MT, OR, WA; 239; 1885-2014)
Potentilla effusa (MT; 46; 1900-2011)
var. effusa (MT; 1; 1995)
Potentilla egedii (AK, YK; 5; 1958-2009)
ssp. egedii (AK, YK; 3; 1977-2006)
Potentilla elegans (AK, BC, YK; 60; 1920-2015)
Potentilla flabellifolia (BC, ID, MT, OR, WA, YK; 725; 1879-2017)
var. flabellifolia (ID, OR; 2; 1993-1999)
Potentilla fragiformis (AK, YK; 10; 1960-2012)
Potentilla furcata (AK, BC, YK; 49; 1933-2014)
Potentilla gelida (AK; 3; 1980-1998)
Potentilla glabrata (ID; 1; 1930)
Potentilla glandulosa (MT, WA; 3; 1902-1970)
f. monticola (MT; 1; 1902)
var. monticola (MT; 1; 1902)
Potentilla glaucophylla (AK, BC, ID, MT, OR, WA, YK; 1296; 1889-2017)
var. glaucophylla (AK, BC, ID, MT, OR, WA, YK; 1057; 1889-2017)
var. perdissecta (BC, ID, MT, WA; 96; 1896-2012)
var. peridissecta (MT; 3; 2008-2015)
Potentilla gorodkovii (AK, YK; 222; 1920-2016)
Potentilla gracilipes (OR; 1; 1899)
Potentilla gracilis (AK, BC, ID, MT, OR, WA, YK; 2789; 1880-2018)
ssp. flabelliformis (BC, ID, WA; 5; 1931-1972)
ssp. typical (MT; 1; 1948)
var. brunnescens (BC, ID, MT, OR, WA; 158; 1896-2017)
var. elmeri (BC, ID, MT, OR, WA; 243; 1885-2016)
var. fastigata (BC, YK; 3; 1997-2007)
var. fastigiata (AK, BC, ID, MT, OR, WA, YK; 809; 1882-2018)
var. flabelliformis (BC, ID, MT, OR, WA; 462; 1884-2017)
var. gracilis (BC, MT, OR, WA, YK; 103; 1880-2016)
var. intermedia (ID; 1; 1959)
var. owyheensis (ID, OR; 52; 1925-2017)
var. pulcherrima (BC, ID, MT, OR, WA; 206; 1896-2016)
Potentilla gracillima (WA; 1; 1988)
Potentilla grayi (ID; 1; 1966)
Potentilla grosseserrata (WA; 1; 1889)
Potentilla hippiana (BC, MT, OR; 176; 1885-2016)
Potentilla hookeriana (AK, BC, ID, MT, YK; 100; 1897-2013)
ssp. hookeriana (AK, BC; 3; 1977-1982)
var. hookeriana (ID, YK; 6; 1968-1994)
Potentilla hookeriana × Potentilla nivea (BC; 1; 1980)
Potentilla humifusa (MT; 2; 1900-1903)
Potentilla hyparctica (AK, BC, ID, MT, WA, YK; 241; 1912-2015)
ssp. elatior (AK, BC, ID, WA, YK; 9; 1920-2010)
ssp. hyparctica (AK, BC, YK; 4; 1944-2001)
Potentilla hyparctica × Potentilla villosa (BC; 2; 1982)
Potentilla inclinata (BC, ID, WA; 16; 1957-2016)
Potentilla jepsonii (ID, MT, OR; 9; 1979-2017)
Potentilla litoralis (BC; 1; 1992)
var. litoralis (BC; 1; 1992)
Potentilla longiloba (MT; 1; 1897)
Potentilla macounii (MT; 45; 1887-2014)
Potentilla millefolia (OR; 22; 1894-1977)
Potentilla modesta (MT; 13; 1938-2017)
Potentilla multifida (AK, WA, YK; 20; 1931-1998)
Potentilla multisecta (ID, MT; 16; 1899-2014)
Potentilla murrayi (AK; 2; 1986-1992)
Potentilla nana (AK, BC, MT; 87; 1917-2011)
Potentilla nepalensis (WA; 1; 2016)
Potentilla newberryi (OR, WA; 86; 1894-2012)
Potentilla nivea (AK, BC, ID, MT, WA, YK; 219; 1800-2013)
ssp. nivea (BC; 2; 1996-2003)
Potentilla norvegica (AK, BC, ID, MT, OR, WA, YK; 514; 1881-2017)
Potentilla nuttallii (ID; 2; 1936-1937)
var. brunnescens (ID; 2; 1936-1937)
Potentilla ovina (AK, BC, ID, MT, OR, YK; 326; 1885-2016)
var. decurrens (BC, ID, MT; 14; 1990-2009)
var. ovina (BC, ID, MT, OR; 132; 1891-2016)
Potentilla pecten (MT; 1; 1897)
Potentilla pensylvanica (AK, BC, ID, MT, OR, WA, YK; 476; 1800-2017)
ssp. litoralis (AK; 1; 2011)
var. arachnoidea (MT; 2; 1897-1956)
Potentilla petrovskyi (AK; 1; 1992)
Potentilla plattensis (MT, OR; 12; 1908-2007)
var. millifolia (OR; 1; 1946)
Potentilla psychrophila (AK, YK; 4; 1966-1976)
Potentilla pulchella (AK, MT, YK; 35; 1947-2012)
Potentilla recta (BC, ID, MT, OR, WA; 312; 1915-2017)
Potentilla reptans (BC, OR; 7; 1901-2014)
Potentilla rhomboidea (WA; 1; 1899)
var. pseudorupestris (WA; 1; 1899)
Potentilla rivalis (BC, ID, MT, OR, WA; 244; 1879-2017)
Potentilla rubricaulis (AK, BC, MT, OR, WA, YK; 46; 1914-2014)
Potentilla saximontana (ID, MT, WA; 5; 1899-1981)
Potentilla stipularis (AK; 5; 1980-2002)
Potentilla subgorodkovii (AK, BC, ID, MT, WA, YK; 234; 1899-2017)
Potentilla subquinata (AK; 10; 1975-2003)
Potentilla subvahaliana (YK; 1; 2012)
Potentilla subvahliana (AK, BC, YK; 125; 1922-2014)
Potentilla supina (BC, ID, MT, OR, WA; 74; 1890-2015)
ssp. paradoxa (BC, ID, MT, OR, WA; 73; 1890-2015)
Potentilla tarvara (ID, MT; 2; 1939-1945)
var. perdissecta (ID, MT; 2; 1939-1945)
Potentilla thurberi (WA; 1; 1902)
Potentilla trina (ID; 1; 1910)
Potentilla tschaunensis (AK; 1; 1992)
Potentilla ×tundricola (ID; 1; 1980)
Potentilla uniflora (AK, BC, YK; 16; 1914-1966)
Potentilla vahliana (AK; 4; 1946-2013)
Potentilla valida (ID, OR, WA; 7; 1931-1947)
var. intermedia (ID, OR; 6; 1936-1947)
var. pseudorupestris (WA; 1; 1931)
Potentilla verna (BC, WA; 4; 1965-2014)
Potentilla versicolor (OR; 35; 1896-2015)
var. darrachii (OR; 4; 2012-2015)
var. versicolor (OR; 10; 1990-1997)
Potentilla villosa (AK, BC, OR, WA, YK; 323; 1890-2014)
var. villosa (AK; 4; 1897-1951)
Potentilla villosula (AK, BC, YK; 151; 1921-2016)
Potentilla villosulla (BC; 2; 1984)
Potentilla viscosa (WA; 1; 1937)
var. pseudorupestris (WA; 1; 1937)
Potentilla vreelandii (MT; 2; 1901)
Potentilla vulcanicola (AK, YK; 50; 1927-2014)
Potentilla vulgaris (BC; 1; 1979)
Poteridium
Poteridium annuum (BC, ID, MT, OR, WA; 379; 1882-2017)
Poterium
Poterium sanguisorba (BC, ID, MT, OR, WA; 144; 1903-2018)
var. polygamum (BC, ID, MT, OR, WA; 141; 1903-2018)
Prunus
Prunus americana (ID, MT, OR, WA; 92; 1900-2012)
Prunus armeniaca (BC, ID, OR, WA; 19; 1974-2014)
Prunus avium (BC, ID, OR, WA; 159; 1928-2017)
Prunus avium × Prunus emarginata (OR, WA; 7; 2001-2008)
Prunus cerasifera (BC, ID, OR, WA; 122; 1926-2017)
Prunus cerasifera × Prunus domestica (ID; 2; 1976)
Prunus cerasifera × Prunus spinosa (ID; 3; 1976)
Prunus cerasus (AK, ID, MT, OR, WA; 29; 1890-2006)
Prunus domestica (BC, ID, OR, WA; 71; 1932-2017)
Prunus dulcis (ID, OR, WA; 13; 1980-2012)
Prunus emarginata (BC, ID, MT, OR, WA; 1416; 1880-2016)
ssp. emarginata (OR; 1; 1952)
ssp. mollis (BC; 2; 1974-1982)
var. erecta (OR, WA; 4; 1947-1957)
Prunus emarginata × Prunus virginiana (WA; 2; 2002)
Prunus florida (WA; 2; 1936)
Prunus gracilis (WA; 1; 1906)
Prunus hortulana (BC; 1; 1997)
Prunus incisa (WA; 2; 2007)
Prunus insititia (ID; 2; 1951-1980)
Prunus jamasakura (WA; 1; 2007)
Prunus laurocerasus (BC, OR, WA; 50; 1933-2018)
Prunus lusitanica (BC, OR, WA; 45; 1971-2016)
Prunus mahaleb (BC, ID, MT, OR, WA, YK; 98; 1894-2016)
Prunus melanocarpa (ID, MT, OR, WA; 14; 1914-1949)
var. melanocarpa (ID, MT, OR, WA; 14; 1914-1949)
Prunus mume (ID; 1; 1977)
Prunus padus (AK, BC, WA, YK; 34; 1969-2016)
Prunus pensylvanica (BC, MT, WA, YK; 54; 1897-2014)
Prunus persica (BC, ID, OR, WA; 23; 1953-2017)
Prunus ×pugetensis (BC, OR, WA; 105; 1996-2016)
Prunus pumila (ID, MT, OR, WA; 14; 1896-2017)
var. besseyi (ID, OR, WA; 11; 1921-2017)
Prunus pyrifolia (OR; 1; 2009)
Prunus serotina (BC, ID, MT, OR, WA; 19; 1953-2016)
var. rufula (MT; 1; 1966)
var. serotina (ID, OR; 3; 2010-2016)
Prunus serrulata (ID; 1; 1996)
Prunus sieboldii (WA; 2; 1940-2005)
Prunus spinosa (BC, ID, OR, WA; 45; 1896-2017)
Prunus subcordata (OR, WA; 58; 1881-2015)
Prunus subhirtella (OR; 1; 1952)
Prunus tomentosa (ID, WA; 6; 2007-2015)
Prunus virginiana (AK, BC, ID, MT, OR, WA; 1686; 1880-2018)
ssp. virginiana (BC; 1; 1991)
var. demissa (BC, ID, MT, OR, WA; 238; 1880-2016)
var. glauca (ID; 1; 1957)
var. melanocarpa (BC, ID, MT, OR, WA; 923; 1884-2016)
var. platypetala (ID; 2; 1997)
var. virginiana (ID, OR; 3; 1930-1994)
Prunus virginica (ID; 1; 2007)
var. virginica (ID; 1; 2007)
Prunus yedoensis (WA; 4; 2005-2007)
Purshia
Purshia mexicana (ID, WA; 5; 1980-2012)
var. stansburyana (ID, WA; 4; 1990-2012)
Purshia tridentata (BC, ID, MT, OR, WA; 1053; 1880-2018)
var. glandulosa (ID, OR; 8; 1967-2014)
var. tridentata (BC, ID, MT, OR, WA; 98; 1886-2018)
Pyracantha
Pyracantha coccinea (BC, ID, OR, WA; 49; 1915-2017)
Pyracantha fortuneana (BC, OR, WA; 32; 1998-2015)
Pyrus
Pyrus calleryana (ID, OR, WA; 15; 1993-2018)
Pyrus communis (BC, ID, OR, WA; 55; 1906-2017)
Pyrus nivalis (BC, OR, WA; 5; 1995-2004)
Pyrus phaeocarpa (OR; 2; 2008-2009)
Pyrus pyrifolia (WA; 1; 2004)
Pysocarpus
Pysocarpus malvaceus (ID; 1; 2006)
Rosa
Rosa acicularis (AK, BC, ID, MT, WA, YK; 761; 1888-2017)
ssp. acicularis (MT, YK; 2; 1965-2014)
ssp. sayi (AK, BC, ID, MT, YK; 399; 1888-2016)
Rosa acicularis ssp. sayi × Rosa nutkana (ID, MT; 2; 1922-1947)
Rosa acicularis × Rosa gymnocarpa (MT; 1; 1955)
Rosa adenocarpa (OR; 1; 1904)
Rosa arkansana (BC, MT; 125; 1885-2011)
f. setulosa (MT; 1; 1953)
Rosa bridgesii (OR; 14; 1927-2009)
Rosa ×britannicae-columbiae (BC; 8; 1913-1977)
Rosa californica (OR; 12; 1901-2014)
Rosa canina (BC, ID, MT, OR, WA; 117; 1899-2018)
Rosa ×collaris (ID, MT; 10; 1911-2009)
Rosa crepsis (ID; 1; 1926)
var. hispida (ID; 1; 1926)
Rosa ×engelmannii (BC; 2; 1953)
Rosa gallica (BC; 2; 1993-2012)
Rosa gymnocarpa (BC, ID, MT, OR, WA; 1027; 1880-2017)
ssp. gymnocarpa (BC, OR, WA; 74; 1889-2006)
ssp. helleri (BC, ID, MT, OR, WA; 58; 1909-2011)
var. gymnocarpa (ID, OR; 75; 1880-2009)
var. serpentina (OR; 14; 1924-2013)
Rosa ×harisonii (ID, OR; 8; 2008-2016)
Rosa laciniatus (WA; 4; 1974-1975)
Rosa multiflora (BC, ID, OR, WA; 61; 1908-2016)
Rosa nubigena (OR; 1; 1959)
Rosa nutkana (AK, BC, ID, MT, OR, WA, YK; 1564; 1871-2017)
ssp. macdougalii (BC, ID, MT, OR, WA; 709; 1880-2016)
ssp. nutkana (AK, BC, ID, OR, WA; 321; 1871-2016)
var. macdougalii (ID; 1; 2011)
var. melina (ID; 1; 2017)
Rosa nutkana × Rosa rugosa (WA; 2; 1999)
Rosa nutkana × Rosa woodsii (BC; 1; 1992)
Rosa obtusifolia (ID; 2; 2014-2017)
Rosa pisocarpa (BC, ID, MT, OR, WA; 358; 1871-2017)
ssp. ahartii (OR; 4; 1914-1929)
var. pisocarpa (OR, WA; 51; 1876-2007)
var. transmontana (OR; 2; 1932-1940)
Rosa pisocarpa × Rosa woodsii var. ultramontana (OR; 1; 1933)
Rosa rubiginosa (BC, ID, OR, WA; 193; 1885-2017)
var. rubiginosa (BC, ID, OR, WA; 153; 1885-2017)
Rosa rugosa (AK, BC, OR, WA; 30; 1921-2016)
Rosa sandbergii (MT; 1; 1892)
Rosa spinosissima (YK; 1; 2009)
Rosa spithamea (OR; 25; 1887-2010)
Rosa virginiana (ID; 1; 1937)
Rosa woodsii (AK, BC, ID, MT, OR, WA, YK; 1854; 1883-2018)
ssp. arizonica (ID; 1; 1931)
ssp. manca (ID; 1; 2010)
ssp. puberulenta (ID; 3; 1911-1912)
ssp. ultramontana (BC, ID, MT, OR, WA; 1004; 1883-2018)
ssp. woodsii (BC, ID, MT, OR, WA, YK; 172; 1892-2011)
var. montana (WA; 2; 1908-1911)
Rubus
Rubus allegheniensis (BC, WA; 18; 1973-2013)
Rubus alpinus × Rubus stellatus (AK; 1; 1941)
Rubus anglocandicans (OR, WA; 8; 2016)
Rubus arcticus (AK, BC, MT, WA, YK; 706; 1897-2017)
ssp. acaulis (AK, BC, MT, WA, YK; 166; 1897-2017)
ssp. arcticus (AK, BC, YK; 21; 1941-2014)
ssp. stellatus (AK, BC, YK; 201; 1899-2016)
Rubus armeniacus (BC, OR, WA; 65; 1950-2016)
Rubus armeniacus × Rubus laciniatus (WA; 2; 2007)
Rubus bartonianus (ID, OR; 71; 1926-2013)
Rubus bifrons (BC, ID, MT, OR, WA; 211; 1886-2016)
Rubus bifrons × Rubus laciniatus (WA; 1; 2011)
Rubus chamaemorus (AK, BC, WA, YK; 368; 1897-2016)
Rubus glaucifolius (OR; 4; 1996-1998)
Rubus hispidus (WA; 3; 1924-1999)
Rubus idaeus (AK, BC, ID, MT, OR, WA, YK; 605; 1886-2017)
ssp. idaeus (ID, MT, OR, WA; 10; 1908-2017)
Rubus idaeus ssp. sachalinensis × Rubus leucodermis (ID; 1; 1976)
ssp. strigosus (AK, BC, ID, MT, OR, WA, YK; 287; 1886-2017)
var. sachalinensis (AK, BC, ID, MT, OR, WA, YK; 67; 1896-1990)
Rubus idaeus × Rubus leucodermis (ID; 1; 1976)
Rubus incurvatus (BC; 1; 1991)
Rubus laciniatus (BC, ID, OR, WA; 238; 1898-2017)
Rubus laciniatus × Rubus macrogongylus (WA; 1; 2004)
Rubus laciniatus × Rubus macrophyllus (WA; 1; 2004)
Rubus lasiococcus (AK, BC, OR, WA; 278; 1880-2017)
Rubus leucodermis (BC, ID, MT, OR, WA, YK; 393; 1874-2018)
Rubus macrophyllus (ID, OR, WA; 23; 1925-2004)
Rubus ×neglectus (MT; 1; 1903)
Rubus nigerrimus (ID, OR, WA; 23; 1894-2010)
Rubus nivalis (BC, ID, OR, WA; 107; 1882-2016)
Rubus nutkanus (AK, BC, ID, MT, OR, WA; 1550; 1880-2017)
Rubus occidentalis (MT; 3; 1931-1964)
Rubus ortivus × Rubus stellatus (AK; 1; 1941)
Rubus parviflorus (AK, BC, WA; 5; 1964-1993)
ssp. parviflorus (BC; 2; 1964-1987)
ssp. parvifolorus (BC; 1; 1987)
Rubus parvifolius (BC, OR; 2; 1991-1998)
Rubus pedatus (AK, BC, ID, MT, OR, WA; 488; 1880-2016)
Rubus pensilvanicus (BC, ID, OR, WA; 8; 1941-2017)
Rubus phoenicolasius (BC; 3; 2006-2011)
Rubus plicatus (BC; 10; 2008-2009)
Rubus pubescens (AK, BC, ID, MT, WA, YK; 124; 1893-2014)
Rubus sachalinensis (AK, BC, ID, MT, OR, WA, YK; 209; 1889-2011)
var. sachalinensis (AK, BC, ID, MT, OR, WA, YK; 209; 1889-2011)
Rubus spectabilis (AK, BC, ID, OR, WA; 940; 1875-2018)
Rubus ulmifolius (BC, OR, WA; 5; 1952-2013)
Rubus ursinus (AK, BC, ID, MT, OR, WA; 659; 1880-2016)
Rubus vestitus (BC, ID, OR, WA; 48; 1922-2017)
Sanguisorba
Sanguisorba canadensis (BC, YK; 5; 1972-2003)
ssp. laterifolia (YK; 3; 1997-2003)
ssp. latifolila (BC; 2; 1972)
Sanguisorba latifolia (WA; 5; 1921-1930)
Sanguisorba menziesii (AK, BC, WA; 63; 1895-2013)
Sanguisorba officinalis (AK, BC, ID, OR, WA, YK; 233; 1881-2016)
Sanguisorba sitchensis (BC; 1; 1986)
ssp. latifolia (BC; 1; 1986)
Sanguisorba stichensis (BC; 1; 1979)
Sanguisorba stipulata (AK, BC, ID, OR, WA, YK; 614; 1888-2015)
Sericotheca
Sericotheca franciscanna (OR; 1; 1916)
Sibbaldia
Sibbaldia procumbens (AK, BC, ID, MT, OR, WA, YK; 966; 1882-2017)
Sibbaldiopsis
Sibbaldiopsis tridentata (WA; 1; 1963)
Sieversia
Sieversia calthifolia (AK; 3; 1902-1939)
Sieversia ciliata (OR; 1; 1950)
var. ciliata (OR; 1; 1950)
Sieversia pentapetala (AK; 11; 1962-2014)
Sieversia scapoidea (MT; 1; 1911)
Sieversia turbinata (MT; 1; 1938)
Sorbaria
Sorbaria kirilowii (WA; 5; 1969-2001)
Sorbaria sorbifolia (AK, BC, WA, YK; 6; 1928-2010)
Sorbaria tomentosa (WA; 2; 1997)
Sorbus
Sorbus americana (ID, WA; 2; 1932-1964)
Sorbus aria (MT; 1; 1932)
Sorbus aucuparia (AK, BC, ID, MT, OR, WA, YK; 154; 1898-2017)
Sorbus californica (OR; 6; 1919-2001)
Sorbus cascadensis × Sorbus sitchensis (WA; 1; 1910)
Sorbus hybrida (ID, WA; 4; 1937-2005)
Sorbus intermedia (BC, WA; 27; 1986-2014)
Sorbus occidentalis × Sorbus sitchensis (WA; 1; 1896)
Sorbus sambucifolia (AK; 7; 1945-2008)
Sorbus scopulina (AK, BC, ID, MT, OR, WA, YK; 1011; 1882-2017)
Sorbus scopulina × Sorbus sitchensis (ID, MT; 4; 1968-1986)
Sorbus scopulina × Sorbus sitchensis var. grayi (WA; 2; 2009)
Sorbus sitchensis (AK, BC, ID, MT, OR, WA, YK; 671; 1879-2017)
ssp. sitchensis (BC; 1; 1957)
var. grayi (BC, MT, OR, WA; 268; 1881-2010)
var. sitchensis (AK, BC, ID, MT, OR, WA, YK; 107; 1881-2015)
Spiraea
Spiraea alba (ID, MT, WA; 5; 1893-1966)
var. latifolia (MT, WA; 2; 1924-1958)
Spiraea beauverdiana (AK, BC, YK; 66; 1891-2008)
Spiraea betulifolia (ID, MT, OR, WA; 6; 1888-2017)
var. corymbosa (ID, MT, OR; 5; 1888-2017)
Spiraea betulifolia × Spiraea douglasii (WA; 1; 1974)
Spiraea betulifolia × Spiraea menziesii (WA; 9; 1890-1924)
Spiraea convexa (WA; 2; 1923)
Spiraea densiflora (ID, MT, OR; 10; 1918-1955)
var. rorea (ID, MT, OR; 10; 1918-1955)
Spiraea douglasii (AK, BC, ID, MT, OR, WA, YK; 1164; 1881-2017)
f. alba (BC; 1; 1917)
ssp. douglasii (BC, OR; 5; 1993-2010)
var. douglasii (BC, ID, OR, WA; 159; 1885-2015)
var. menziesii (AK, BC, ID, MT, OR, WA, YK; 430; 1882-2016)
var. roseata (ID, MT, WA; 86; 1895-2017)
Spiraea douglasii × Spiraea menziesii (BC; 1; 1990)
Spiraea ×hitchcockii (OR, WA; 21; 1924-2016)
Spiraea hydrophila (WA; 2; 1924)
Spiraea hypericifolia (OR; 1; 1958)
Spiraea japonica (BC, WA; 7; 1991-2015)
var. fortunei (BC; 4; 2010-2015)
Spiraea lucida (AK, BC, ID, MT, OR, WA; 1397; 1875-2017)
Spiraea prunifolia (WA; 1; 1932)
Spiraea ×pyramidata (BC, ID, MT, OR, WA; 246; 1866-2017)
Spiraea pyramidata × Spiraea splendens (ID; 2; 2015)
Spiraea salicifolia (ID; 1; 1932)
Spiraea splendens (BC, ID, MT, OR, WA; 763; 1880-2017)
Spiraea stevenii (AK, BC, YK; 252; 1906-2014)
Spiraea thunbergii (OR; 1; 1886)
Spiraea tomentosa (OR; 3; 1925-2006)
Spiraea vanhouttei (ID, OR, WA; 9; 1907-2012)
Unknown
Unknown pacifica (OR; 1; 1981)
Waldsteinia
Waldsteinia idahoensis (ID, MT, WA; 54; 1902-1999)