Collection Holdings from Northwestern U.S.A.:
Includes:
Amaryllidaceae
Subfamily Allioideae
Tribe Allieae
- Allium schoenoprasum
- Europe, Asia
Apocynaceae
Subfamily Asclepiadoideae
Tribe Asclepiadeae
- Asclepias tuberosa
- SE. Canada, U.S.A. to N. Mexico
Araceae
Subfamily Lemnoideae
- Lemna minor
- Cosmopolitan
- Wolffia columbiana
- N & S America
Araliaceae
Subfamily Hydrocotyloideae
- Hydrocotyle verticillata
- cosmopolitan
Asparagaceae
Subfamily Agavoideae
Tribe Agaveae
- Yucca glauca
- Central N. America - Iowa to Texas and N. Dakota.
Subfamily Scilloideae
Tribe Hyacintheae
- Camassia quamash
- western USA and Canada
Asteraceae
Subfamily Asteroideae
Tribe Anthemideae
- Artemisia tridentata
- intermountain west USA
- Artemisia tridentata subsp. vaseyana
- western US
Subfamily Asteroideae
Tribe Astereae
- Grindelia integrifolia
- Oregon, Washington and British Columbia
W/C
- Solidago rigida
- central & eastern US & Canada
- Ericameria nauseosa var. nauseosa
- western plains & rocky mountains, USA
Subfamily Asteroideae
Tribe Heliantheae
- Helianthus tuberosus
- eastern North America
Cactaceae
Subfamily Opuntioideae
Tribe Opuntieae
- Opuntia fragilis
- western US - wide distribution, but not common
Ceratophyllaceae
- Ceratophyllum demersum
- cosmopolitan, native to all continents except Antarctica.
Convolvulaceae
Subfamily Convolvuloideae
Tribe Convolvuleae
- Calystegia sepium
- Europe, Asia, North America
Cornaceae
- Cornus sericea
- Canada, USA, Mexico
Cupressaceae
Subfamily Sequoioideae
- Sequoia sempervirens
- Southwestern N. America - Oregon to California.
Dryopteridaceae
- Polystichum munitum
- western USA, Canada
W/C
Equisetaceae
- Equisetum hyemale
- eastern North America
Fabaceae
Subfamily Faboideae
Tribe Amorpheae
- Amorpha fruticosa
- originally from se USA, now widespread across North America
Subfamily Faboideae
Tribe Phaseoleae
- Apios americana
- eastern North America
Fagaceae
Subfamily Quercoideae
- Quercus gambelii
- WC. & SC. U.S.A. to N. Mexico
Grossulariaceae
- Ribes cereum
- western North America
- Ribes hirtellum 'Pixwell'
- northeastern North America
Hydrocharitaceae
- Elodea canadensis
- S. Canada to U.S.A.
- Vallisneria americana
- N. America to Honduras, Colombia, Caribbean
Juncaginaceae
- Triglochin maritima
- Temp. Northern Hemisphere, S. South America
W/C
Lamiaceae
Subfamily Scutellarioideae
- Scutellaria tuberosa
- USA and Mexico, Pacific Coast
W/C
Lauraceae
- Umbellularia californica
- Oregon & California
Lentibulariaceae
- Utricularia gibba
- Trop. & Subtrop. Old World, America
- Utricularia vulgaris subsp. macrorhiza
- Siberia to Russian Far East and N. China, N. Japan, N. America
W/C
Martyniaceae
- Proboscidea louisianica
- southwestern United States and Mexico
Myricaceae
- Myrica gale
- circumboreal; northern and western Europe, North America
Nyctaginaceae
- Mirabilis laevis
- western USA
W/C
Papaveraceae
Subfamily Fumarioideae
Tribe Fumarieae
- Capnoides sempervirens
- USA, Canada
W/C
Pinaceae
Subfamily Pinoideae
- Pinus ponderosa
- SW. Canada to N. Mexico
Poaceae
Subfamily Panicoideae
Tribe Andropogoneae
- Schizachyrium scoparium
- Canada to Mexico
Polemoniaceae
Subfamily Polemonioideae
Tribe Polemonieae
- Polemonium viscosum
- western North America
Pteridaceae
Subfamily Cheilanthoideae
- Aspidotis densa
- western USA and Canada
- Cheilanthes eatonii
- USA and Mexico
Rosaceae
Subfamily Dryadoideae
Tribe Dryadeae
- Cercocarpus montanus
- western US
- Purshia tridentata
- western US & Canada
Subfamily Rosoideae
Tribe Potentilleae
- Fragaria chiloensis
- western North America & disjunct population in Chile
W/C
Santalaceae
- Phoradendron leucarpum
- southern US & Mexico
W/C
Sarraceniaceae
- Sarracenia purpurea
- Eastern N. America
Saururaceae
- Anemopsis californica
- W. & C. U.S.A. to Mexico
W/C
Selaginellaceae
- Selaginella watsonii
- western USA
Urticaceae
Subfamily
Tribe Urticeae
- Urtica dioica
- widely naturalized in temperate climates
Violaceae
- Viola labradorica
- eastern North America
W/C = Wild Collected
= Currently Flowering
= Image(s) Available = map available for this accession
data regenerated on Sat, 26 Jul 2025 02:09:09 -0400