Roadless Areas
Home/Species/ Stebbins' Lewisia

Lewisia stebbinsii

Gankin & Hildreth

Stebbins' Lewisia

G2Imperiled Found in 4 roadless areas NatureServe Explorer →
G2ImperiledGlobal Rank
MediumThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.128327
Element CodePDPOR040G0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
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 Date2012-12-05
Change Date2013-08-20
Edition Date2005-09-20
Edition AuthorsD. Gries, R. Bittman 2005
Threat ImpactMedium
Range Extent250-1000 square km (about 100-400 square miles)
Number of Occurrences6 - 20
Rank Reasons
Endemic to California, Lewisia stebbinsii is known from only about 11 extant occurrences in Mendocino and Trinity Counties. This is an endemic to serpentine and non-serpentine soils in a very localized area. Threats include timber, range management, road maintenance, ORV use and horticultural collection. Protection activities need to be amplified.
Range Extent Comments
The entire range covers approximately 300 sq mi. The range occurs entirely in Mendocino and adjacent Trinity counties in northern California.
Occurrences Comments
11 EO's, 2 may be historical.
Threat Impact Comments
Threats include collection by succulent collectors, roads, some timber harvest and ORVs. The Forest has taken some steps to protect certain populations.
Ecology & Habitat

Habitat

Open areas with relatively dry, gravelly or rocky soil; volcanic or serpentine substrates. Habitats are sometimes exposed and sometimes covered with herbaceous vegetation, and are found within coniferous forest communities (Lodgepole Forest, Red Fir Forest, Yellow Pine Forest, and sparse Jeffrey pine-white fir forest) as well as occasionally among brewer oak stands. 1600 - 2050 m.
Terrestrial Habitats
Forest/WoodlandForest - ConiferWoodland - HardwoodGrassland/herbaceousBarrens
Other Nations (1)
United StatesN2
ProvinceRankNative
CaliforniaS2Yes
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (4)
California (4)
AreaForestAcres
Black ButteMendocino National Forest15,461
GrindstoneMendocino National Forest26,031
Skeleton GladeMendocino National Forest9,237
Snow MountainMendocino National Forest14,457
References (7)
  1. CalFlora. 2005. Information on California plants for education, research and conservation. Berkeley, California: The CalFlora Database [web application]. Available: http://www.calflora.org/. (Accessed 2005)
  2. California Native Plant Society (CNPS). 2001. Inventory of Rare and Endangered Plants of California (sixth edition). Rare Plant Scientific Advisory Committee, David P. Tibor, Convening Editor. California Native Plant Society. Sacramento, CA. x + 388pp.
  3. Flora of North America Editorial Committee (FNA). 2003b. Flora of North America north of Mexico. Vol. 4, Magnoliophyta: Caryophyllidae, part 1. Oxford University Press, New York. xxiv + 559 pp.
  4. Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. University of California Press, Berkeley, CA. 1400 pp.
  5. 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.
  6. Nakamura, G., and J. K. Nelson, eds. 2001. Illustrated field guide to selected rare plants of northern California. University of California Agriculture and Natural Resources publication 3395, Oakland, CA. 370 pp.
  7. 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.