Home/Species/ Opposite-leaf Bitteroot

Lewisia oppositifolia

(S. Wats.) B.L. Robins.

Opposite-leaf Bitteroot

G3Vulnerable Found in 1 roadless area NatureServe Explorer →

G3VulnerableGlobal Rank

MediumThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.149703

Element CodePDPOR040B0

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicendemic to a single nation

KingdomPlantae

PhylumAnthophyta

ClassDicotyledoneae

OrderCaryophyllales

FamilyMontiaceae

GenusLewisia

Concept Reference

Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.

Conservation Status

Rank MethodLegacy Rank calculation - Excel v3.1x

Review Date2017-07-14

Change Date2017-07-14

Edition Date2017-07-14

Edition AuthorsBittman, R. and A. Tomaino

Threat ImpactMedium

Range Extent1000-5000 square km (about 400-2000 square miles)

Number of Occurrences21 - 80

Rank Reasons

Regional endemic of California and Oregon with moderate threat. There are approximately 44 occurrences.

Range Extent Comments

Known only from northern California and southwestern Oregon.

Occurrences Comments

Fourteen occurrences in California (CNDDB 2017) and perhaps 30 in Oregon.

Threat Impact Comments

Most occurrences are on USFS lands, but several list threats, including ORVs, mining, recreation, and roads

Ecology & Habitat

Other Nations (1)

United StatesN3

Province	Rank	Native
Oregon	S3	Yes
California	S2	Yes

Plant Characteristics

Economic Value (Genus)No

Roadless Areas (1)

Oregon (1)

Area	Forest	Acres
South Kalmiopsis	Siskiyou National Forests	104,477

References (1)

Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.