Home/Species/ Congdon's Lewisia

Lewisia congdonii

(Rydb.) S. Clay

Congdon's Lewisia

G2Imperiled Found in 2 roadless areas NatureServe Explorer →

G2ImperiledGlobal Rank

LowThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.130977

Element CodePDPOR04040

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicendemic to a single state or province

KingdomPlantae

PhylumAnthophyta

ClassDicotyledoneae

OrderCaryophyllales

FamilyMontiaceae

GenusLewisia

Other Common Names

Congdon's Bitterroot (EN)

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 Date2012-12-05

Change Date2013-08-20

Edition Date2005-09-30

Edition AuthorsBittman, R.L., rev. D. Gries (1999), R. Bittman 2005

Threat ImpactLow

Range Extent100-250 square km (about 40-100 square miles)

Number of Occurrences6 - 20

Rank Reasons

Endemic to California, Lewisia congdonii is known from approximately eight occurrences in the canyons of the Kings and Merced Rivers. Most of the occurrences are very inaccessible. However, a few are threatened by road maintenance, herbicide spraying and overcollecting. None are in permanent protection.

Range Extent Comments

Fresno and Mariposa Counties, California; Sierra Nevada in the Merced and Kings River canyons. The approximate range extent is 85 sq mi in two distinct groupings.

Occurrences Comments

Known from approximately 8 occurrences; 5 have not been seen in over 20 yrs.

Threat Impact Comments

Threats are apparently minimal but include overcollecting, road maintenance at some sites and perhaps herbicide spraying by road crews.

Ecology & Habitat

Habitat

Crevices & pockets of soil among metamorphic rocks on slopes and cliffs in yellow pine forest & mixed evergreen forest.

Terrestrial Habitats

Forest/WoodlandForest - ConiferCliff

Other Nations (1)

United StatesN2

Province	Rank	Native
California	S2	Yes

Plant Characteristics

Economic Value (Genus)No

Roadless Areas (2)

California (2)

Area	Forest	Acres
Ferguson Ridge	Sierra National Forest	6,104
Trumbull Peak	Stanislaus National Forest	6,164

References (2)

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.
Skinner, M.W., and B.M. Pavlik, eds. 1997 (1994). Inventory of rare and endangered vascular plants of California. 1997 Electronic Inventory Update of 1994 5th edition, California Native Plant Society, Special Publication No. 1, Sacramento.