Documentation forms for Oregon state and global ranks for vascular plants are provided in the table below. For detailed information on the ranking process, see Ranking Documentation. For a brief description of the meaning of the rank codes, see Rare Species Ranking Definitions. Species for which only a G-rank form is available are Oregon endemics, thus the S-rank information for these species is the same as the G-rank.

Tables of Results: Vascular Plants  |  Fungi  |  Vertebrates   |  Invertebrates

Vascular Plants

Scientific Name Common Name Global Rank State Rank Climate Vulnerability Rank Date Climate Vulnerability Date
Abronia umbellata ssp. breviflora Pink sandverbena G4G5T2 S1 High   2016-08-17
Achnatherum hendersonii Henderson ricegrass G3 S2 Moderate   2016-08-17
Achnatherum wallowaense Wallowa ricegrass G2G3 S2S3 Moderate   2016-08-17
Agrostis howellii Howell's bentgrass G2 S2 Extreme   2016-07-08
Aliciella triodon Coyote gilia G5 S2   2016-04-20  
Allium dictuon Blue Mt. onion G2 S2 Less Vulnerable   2016-08-01
Amsinckia carinata Malheur Valley fiddleneck G2 S2 Extreme   2016-08-01
Arabis koehleri var. koehleri Koehler's rockcress G3T1Q S1 High   2016-08-15
Arabis macdonaldiana Red Mountain rockcress G2 S1 Presumed Stable 2012-12-12 2012-12-21
Arabis modesta Rogue Canyon rockcress G3 S2 Less Vulnerable   2016-08-15
Arctostaphylos hispidula Gasquet manzanita G3 S2 Moderate   2016-08-15
Astragalus applegatei Applegate's milk-vetch G1 S1 High 2012-11-16 2012-11-26
Astragalus californicus California milk-vetch G3 S1 Moderate   2016-08-10
Astragalus lemmonii Lemmon's milk-vetch G2 S1 High 2013-04-29 2013-04-29
Astragalus mulfordiae Mulford's milk-vetch G2 S1 Moderate 2013-04-22 2015-05-27
Astragalus peckii Peck's milk-vetch G3 S3 Moderate 2010-05-28 2016-08-16
Astragalus tegetarioides Bastard kentrophyta G3 S3 High 2010-05-31 2016-08-17
Astragalus tyghensis Tygh Valley milkvetch G2 S2 High   2016-08-01
Bensoniella oregana Bensonia G3 S3 High 2010-06-18 2016-08-15
Boechera atrorubens Sickle-pod rockcress G3 S2 Less Vulnerable   2017-06-01
Boechera hastatula Hells Canyon rockcress G2 S2 Moderate   2016-08-01
Boechera horizontalis Crater Lake rockcress G1 S1 High   2016-08-01
Boechera paddoensis Mt. Adams rockcress G1 S1   2016-04-21  
Botrychium ascendens Upward-lobed moonwort G3 S2 Moderate   2017-06-01
Botrychium crenulatum Crenulate moonwort G3 S2 Moderate   2017-06-01
Botrychium lineare Slender moonwort G2G3 S1 High   2017-06-01
Botrychium montanum Mountain grape-fern G3 S2 Moderate   2017-06-01
Botrychium paradoxum Peculiar moonwort G3G4 S1 Moderate 2013-01-29 2013-01-29
Botrychium pedunculosum Stalked moonwort G2G3 S1 Moderate   2017-06-01
Botrychium pumicola Pumice grape-fern G3 S3 Moderate 2010-06-21 2017-06-01
Calamagrostis breweri Brewer's reedgrass G3 S2 Extreme   2017-06-01
Calamagrostis tweedyi Tweedy's reedgrass G3 S1   2016-04-21  
California macrophylla Large-leaved filaree G2 G1 Moderate   2016-08-01
Calochortus coxii Cox's mariposa-lily G1 S1 Moderate 2012-11-16 2012-11-16
Calochortus greenei Greene's mariposa-lily G3 S3 Moderate 2010-06-23 2017-06-01
Calochortus howellii Howell's mariposa-lily G3 S3 Moderate 2010-06-25 2017-06-01
Calochortus longebarbatus var. peckii Peck's mariposa-lily G4T3 S3   2010-06-28  
Calochortus nitidus Broad fruit mariposa lily G3 S1 Less Vulnerable   2017-06-01
Calochortus persistens Siskiyou mariposa-lily G2 S1 Presumed Stable 2013-03-29 2013-03-29
Calochortus umpquaensis Umpqua mariposa lily G3 S3 Moderate   2017-06-01
Camassia howellii Howell's camas G2 S2 Less vulnerable   2016-08-01
Camissonia parvula Lewis' river suncup G5 S2   2016-06-14  
Cardamine pattersonii Saddle Mt. bittercress G2 S2 High   2016-08-01
Carex concinna Low northern sedge G5 S1   2012-09-12  
Carex davyi Dry-spike sedge G2 S1 Less vulnerable   2016-08-01
Carex idahoa Idaho Sedge G2G3 S1 Extreme   2017-06-01
Carex klamathensis Klamath sedge G2 S2 Moderate   2016-08-01
Carex tahoensis Tahoe sedge G5 S1S2 High 2016-05-11 2016-05-11
Carex tiogana Tioga pass sedge G1 S1 Extreme 2012-11-15 2012-11-15
Castilleja chambersii Chambers' paintbrush G1 S1 High   2016-08-01
Castilleja chlorotica Green-tinged paintbrush G3? S3? Moderate 2010-08-01 2017-06-01
Castilleja fraterna Fraternal paintbrush G2 S2 Extreme   2016-08-01
Castilleja levisecta Golden paintbrush G1 SX   2012-11-15  
Castilleja mendocinensis Mendocino coast paintbrush G2 S1 Extreme   2016-08-01
Castilleja oresbia Pale Wallowa paintbrush G3 S2S3 Presumed Stable 2013-04-10 2013-04-02
Castilleja rubida Purple alpine paintbrush G2 S2 Extreme   2016-08-01
Castilleja schizotricha Split-hair paintbrush G3 S2 Moderate   2017-06-01
Chaenactis suffrutescens Shasta pincushion G3 S1   2016-04-20  
Chloropyron maritimus ssp. palustris Pt. Reyes bird's-beak G4T2 S2 Extreme   2016-08-01
Collomia mazama Mt. Mazama collomia G4 S4 High 2010-06-20  
Collomia renacta Barren valley collomia G1 S1 Presumed Stable 2012-11-09 2012-11-09
Corydalis aquae-gelidae Cold-water corydalis G3 S3 High 2010-07-10 2016-08-17
Delphinium leucophaeum White rock larkspur G2 S2 Moderate   2016-08-01
Delphinium oreganum Willamette Valley larkspur G3Q S1 Less vulnerable   2016-08-01
Delphinium pavonaceum Peacock larkspur G1Q S1 Less vulnerable   2016-08-01
Dodecatheon austrofrigidum Frigid shootingstar G2 S2 Moderate   2016-0-01
Epilobium oreganum Oregon willow-herb G2 S2 Presumed Stable 2013-03-25 2013-03-25
Erigeron davisii Englemann's Daisy G3 S1 Less Vulnerable   2017-06-01
Erigeron howellii Howell's daisy G2 S2 Less vulnerable   2016-08-01
Erigeron latus Broad fleabane G3 S1? Moderate   2017-06-01
Erigeron oreganus Oregon daisy G3 S3 High 2010-07-02 2016-08-01
Erigeron stansellii   G1 S1   2012-10-04  
Eriogonum calcareum   G5 S2S3   2012-10-04  
Eriogonum chrysops Golden buckwheat G2 S2 Less vulnerable 2012-11-19 2015-05-27
Eriogonum crosbyae var. mystrium Pueblo Mountains buckwheat G2 S2   2012-10-10  
Eriogonum cusickii Cusick's eriogonum G2 S2 Moderate   2016-08-09
Eriogonum prociduum Prostrate buckwheat G2? S1? Moderate   2016-08-01
Eriogonum villosissimum Acker Rock wild buckwheat G1 S1 Moderate 2012-01-16 2016-08-01
Erysimum concinnum Pacific wallflower G3 S1 Extreme   2016-08-01
Erythranthe hymenophylla Membrane-leaved monkeyflower G2 S1S2 Extreme   2016-08-09
Erythronium elegans Coast Range fawn-lily G2 S2 Less vulnerable   2016-08-01
Erythronium howellii Howell's adder's-tongue G3 S3   2010-07-07  
Eucephalus gormanii Gorman's aster G3 S3   2010-07-09  
Eucephalus vialis Wayside aster G3 S3   2010-07-09  
Filipendula occidentalis Queen-of-the-forest G2 S2 Less vulnerable   2016-08-01
Frasera umpquaensis Umpqua swertia G3 S3 Moderate 2009-10-12 2016-08-19
Fritillaria gentneri Gentner's fritillaria G1 S1 Presumed Stable 2012-11-08 2012-11-08
Gentiana setigera Waldo gentian G2 S2 High   2016-08-01
Gilia millefoliata Seaside gilia G2 S1 High 2013-03-06 2013-03-11
Gratiola heterosepala Boggs Lake hedge-hyssop G2 S1 Extreme   2016-08-01
Hackelia bella Beautiful stickseed G3? S1 Less Vulnerable   2017-06-01
Hackelia cronquistii Cronquist's stickseed G3 S3 High 2010-07-12 2016-08-19
Hackelia ophiobia Three forks stickseed G3 S1 Moderate   2017-06-01
Hastingsia bracteosa ssp. atropurpurea Purple flowered rush lily G2T2 S2 Moderate   2016-08-01
Hastingsia bracteosa ssp. bracteosa Large-flowered rush lily G2T2 S2 Moderate   2016-08-01
Helianthus bolanderi Bolander's sunflower G4 S2 Moderate 2016-05-13 2016-05-13
Hesperocyparis bakeri Baker's cypress G3 S1 Less Vulnerable   2017-06-01
Horkelia hendersonii Henderson's horkelia G1G2 S1S2 Extreme   2016-08-01
Huperzia miyoshiana Pacific fir-moss G4 S1 Moderate 2016-05-12 2016-05-12
Iliamna latibracteata California globe-mallow G3 S2 Moderate   2017-06-02
Ivesia rhypara var. rhypara Grimy ivesia G2T2 S1 High 2013-04-09 2015-05-27
Ivesia rhypara var. shellyi Shelly's ivesia G1G2T1T2 S1S2 High 2013-04-11 2013-04-11
Juncus kelloggii Kellogg's dwarf rush G3? S2? Less Vulnerable 2016-05-13 2016-05-13
Kalmiopsis fragrans North Umpqua kalmiopsis G2 S2 Moderate 2012-11-01 2012-11-01
Lasthenia ornduffii Large-flowered goldfields G2 S2 High   2016-08-01
Lathyrus holochlorus Thin-leaved peavine G2 S2 Less Vulnerable   2016-08-01
Lepidium davisii Davis' peppergrass G3 S1 High   2017-06-01
Lilium occidentale Western lily G1 S1 High 2012-10-16 2012-10-26
Limnanthes pumila ssp. pumila Dwarf wooly meadow-foam G1 S1 Extreme   2016-08-01
Lomatium bentonitum   G1 S1   2012-10-04  
Lomatium cookii Cook's desert-parsley G1 S1 High 2012-10-22 2015-05-27
Lomatium englemannii Englemann's desert-parsley G3 S1 Less Vulnerable   2017-06-02
Lomatium erythrocarpum Red-fruited lomatium G1G2 S1S2 Extreme 2012-09-20 2012-09-20
Lomatium greenmanii Greenman's lomatium G1 S1 Extreme   2016-08-01
Lomatium ochocense Ochoco desert-parsley G2 S2 Presumed Stable 2012-09-12 2012-09-12
Lomatium pastorale Meadow lomatium G1G2 S1 Extreme   2016-08-01
Lomatium roseanum Rose's lomatium G2G3 S1 Moderate   2017-06-01
Lomatium suksdorfii Suksdorf's desert parsley G3 S2 Less Vulnerable   2017-06-01
Luina serpentina Colonial luina G3 S3 Extreme 2010-07-31 2016-08-19
Lupinus lepidus var. ashlanensis Mt. Ashland Lupine G1T1 S1 Extreme   2016-08-01
Lupinus lepidus var. cusickii Cusick's lupine G1T1 S1 High 2012-10-15 2012-10-15
Lupinus sabinianus Sabin's lupine G4 S4   2016-04-19  
Meconella oregana White fairypoppy G2G3 S1 Less Vulnerable   2017-06-01
Mentzelia mollis Smooth mentzelia G2 S2 Extreme   2016-08-01
Mentzelia packardiae Packard's mentzelia G2Q S2 High   2016-08-01
Micranthes hitchcockiana Saddle Mt. saxifrage G1 S1 High   2016-08-01
Mimulus hymenophyllus Membrane-leaf monkeyflower G2 S1S2 Extreme 2012-08-24 2012-09-28
Mimulus patulus Stem-leaved monkeyflower G3Q S2S4 High 2013-04-08 2013-04-08
Mirabilis macfarlanei Macfarlane's four-o'clock G2 S1 Moderate 2013-01-29 2013-01-29
Monardella purpurea Siskiyou monardella G3Q S3 Less Vulnerable   2017-06-01
Myosurus sessilis Sessile mousetail G2 S1 Moderate   2016-08-10
Navarretia willamettensis Willamette navarretia G1 S1 High   2016-08-01
Oenothera wolfii Wolf's evening-primrose G1 S1 High 2012-08-21 2012-09-10
Penstemon barrettiae Barrett's penstemon G2 S2 Moderate   2016-08-11
Penstemon glaucinus Blue-leaved penstemon G3 S3 Less Vulnerable 2010-07-14 2017-06-01
Penstemon peckii Peck's penstemon G3 S3 Less Vulnerable 2010-07-14 2016-08-19
Penstemon perpulcher Beautiful penstemon G3? S1 Less Vulnerable   2017-06-01
Perideridia erythrorhiza Red-root yapah G2 S2 Presumed Stable 2012-09-06 2012-09-06
Phacelia argentea Silvery phacelia G2 S2 Extreme   2016-08-01
Phacelia inundata Playa phacelia G2 S2 High 2013-02-28 2015-05-27
Phacelia leonis Siskiyou phacelia G2 S1 Moderate 2013-02-28 2013-02-25
Phacelia minutissima Dwaft phacelia G3 S1 High   2017-06-01
Plagiobothrys hirtus Rough popcorn flower G1 S1 Extreme 2012-09-04 2012-09-04
Plagiobothrys salsus Desert allocarya G2G3 S1 High   2016-08-19
Pleuropogon oregonus Oregon semaphore grass G1 S1 Extreme 2012-08-22 2012-08-22
Prosartes parvifolia Siskiyou fairy bells G2? S1 Less Vulnerable   2016-08-01
Pyrrocoma radiata Snake River goldenweed G3 S3 Moderate 2010-07-26 2017-06-01
Pyrrocoma scaberula Rough pyrrocoma G3 S3 High 2010-07-20 2016-08-11
Ranunculus austrooreganus Southern Oregon buttercup G3 S3 Moderate   2016-08-01
Ranunculus triternatus Obscure Buttercup G2 S1 Presumed Stable 2012-12-07 2012-12-07
Romanzoffia thompsonii Thompson mistmaiden G4 S4   2010-07-29  
Rorippa columbiae Columbia Cress G3 S3 Moderate   2017-06-01
Rubus bartonianus Bartonberry G2 S2 High 2012-12-05 2012-12-05
Sedum moranii Rogue River Stonecrop G2 S2 Presumed Stable 2012-11-20 2012-08-21
Sericocarpus rigidus White-topped aster G3 S2 Moderate   2017-06-01
Sidalcea hendersonii Henderson's sidalcea G3 S1 Extreme   2017-06-01
Sidalcea hickmanii ssp. petraea Neil Rock sidalcea G3 S1 Less Vulnerable   2017-06-01
Sidalcea hirtipes Bristly-stemmed Sidalcea G2 S2 High   2016-08-08
Silene spaldingii Spalding's catchfly G2 S2 High 2013-02-20 2013-02-21
Sisyrinchium hitchcockii Hitchcock's blue-eyed grass G2 S1 Moderate 2013-02-19 2013-02-19
Sisyrinchium sarmentosum Pale blue-eyed grass G1 S1 Moderate 2012-08-23 2015-05-27
Sophora leachiana Western Necklace G2 S2 Moderate   2016-08-02
Stanleya confertiflora Biennial stanleya G2 S2 Presumed Stable 2012-10-03 2012-08-24
Stephanomeria malheurensis Malheur wire-lettuce G1 S1 High 2012-08-27 2012-08-27
Streptanthus howellii Howell's streptanthus G2 S2 Less Vulnerable   2016-08-01
Sullivantia oregana Oregon sullivantia G2 S2 High   2016-08-01
Tauschia howellii Howell's tauschia G2 S1 Moderate 2014-07-23 2014-07-23
Thelypodium brachycarpum Short-podded thelypody G3 S2 Less Vulnerable   2017-06-02
Thelypodium eucosmum Arrow-leaf thelypody G2 S2 Moderate   2015-05-27
Thelypodium howellii ssp. howellii Howell's thelypody G2T2 S1 Extreme   2016-08-02
Thelypodium howellii ssp. spectabilis Howell's spectacular thelypody G2 T1S1 High 2013-02-14 2013-02-19
Trifolium douglasii Douglas's clover G2 S2 Moderate 2013-02-11 2013-02-11
Trifolium leibergii Leiberg's clover G2 S2 Presumed Stable 2013-01-30 2013-01-30
Trifolium owyheense Owyhee clover G2 S2 High 2013-05-01 2015-05-27