CNPS

CNPS Rare Plant Inventory



Taxon Details

Lewisia stebbinsii

Stebbins' lewisia

  View Report   Copy Link Calflora eFlora CCH CalPhotos iNaturalist
Photo of Lewisia stebbinsii
© 2015 John Doyen 		Photo of Lewisia stebbinsii
© 2018 John Doyen 		Photo of Lewisia stebbinsii
© 2019 John Doyen

Taxon Summary:

Lewisia stebbinsii, commonly known as Stebbins' lewisia, is a perennial herb in the Montiaceae that is found only in California. It occurs within Lower montane coniferous forest, and Upper montane coniferous forest, growing at elevations from 1600 to 2050 meters. Lewisia stebbinsii is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.

  Classification

Scientific Name:
Lewisia stebbinsii Gankin & Hildreth
Common Name:
Stebbins' lewisia
Family: Montiaceae
Element Code: PDPOR040G0
USDA Plants Symbol: LEST6
Synonyms/Other Names:
Name Status: JEF, FNA, POWO,
IPNI, Tropicos

  Conservation Status

CA Rare Plant Rank: 1B.2
Fed List: None
State List: None
Global Rank: G2
State Rank:
 S2
Other Status: SB_UCSC; USFS_S
CRPR Changes:
Add Date: 1974-01-01
Date Edited: 2022-12-06

  Ecology and Life History

Lifeform: perennial herb
Blooming Period: May-Jul
JFMAMJJASOND
Elevation:
1600 - 2050 meters
5250 - 6725 feet
General Habitats:
  • Lower montane coniferous forest
  • Upper montane coniferous forest
Microhabitat Details:
Microhabitat:
  • Gravelly
  • Serpentine (sometimes)

  Notes

Notes:
Threats:

Threatened by timber and range management activities, road maintenance, vehicles, and horticultural collecting.
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 4
Total EOs % of EOs
EOs with Threat Listed: 7 58 %
THREAT LIST:
Road/trail construction/maint. 5 41%
ORV activity 4 33%
Grazing 1 8%
Logging 1 8%

  Occurrence Data from the CNDDB

Total Occurrences: 12
Element Occurrence Ranks:
A B C D X U
3 4 1 0 0 4
Occurrence Status:
Historical >20 Years 9
Recent <=20 Years 3
Presence:
Presumed Extant 12
Possibly Extirpated 0
Presumed Extirpated 0

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Lake (LAK), Mendocino (MEN), Trinity (TRI)
Quads: Name (Quad Code)
Hull Mountain (3912258), Leech Lake Mtn. (3912381), Plaskett Ridge (3912268), Solomon Peak (4012218)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.
Regional Map

  Map

Presumed Extant
Click on quad for name. Hold Shift Key to use mouse scroll wheel

  Selected References

Original Description: Four Seasons 2(4):12-14 (1968)
Species Account: Lewisia stebbinsii profile for potential Species of Conservation Concern evaluation (2018)
Other: USFS Potential Species of Conservation Concern Profile

Go to top


Suggested Citation:
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 26 January 2025].
}