Taxon Report

Lewisia disepala Rydb.

Yosemite lewisia

Print Report


© 2009 Steven Perry

  Classification
Scientific Name:
 Lewisia disepala Rydb.
Common Name:
 Yosemite lewisia
Family: Montiaceae
Element Code: PDPOR04060
USDA Plants Symbol: LEDI3
Synonyms/Other Names:

Ecology and Life History
Lifeform: perennial herb
Blooming Period: Mar-Jun Mar-Jun
Elevation: 1035-3500 (3395-11485)
General Habitats: Lower montane coniferous forest, Pinyon and juniper woodland, Upper montane coniferous forest
Microhabitat: Granitic, Sandy
Microhabitat Details:

Conservation Status
CA Rare Plant Rank: 1B.2
Global Rank: G2
State Rank:
 S2
State List: None
Fed List: None
Other Status: BLM_S; USFS_S
CRPR Changes:

Occurrence Data from the CNDDB
Total Occurrences: 22
Element Occurrence Ranks:
   Excellent (A) 7
   Good (B) 1
   Fair (C) 4
   Poor (D) 0
   None (X) 0
   Unknown (U) 10

Location
California Endemic:  True
California Counties and Islands: Name (Code)
Fresno (FRE), Kern (KRN), Madera (MAD), Mariposa (MPA), Tulare (TUL)
Quads: Name (Quad Code)
Balloon Dome (3711942), Cannell Peak (3511873), El Capitan (3711966), Half Dome (3711965), Hockett Peak (3611824), Lamont Peak (3511871), Mammoth Pool Dam (3711933), Merced Peak (3711964), Sentinel Peak (3611815), Shaver Lake (3711913), Sirretta Peak (3511883), Squaw Dome (3711943), Tenaya Lake (3711974), Walker Pass (3511861), White Dome (3511872), Yosemite Falls (3711975)

Threat List Data from the CNDDB

Threat List Total: 8
EOs with Threat Listed: Total EOs % of EOs
10 45 %
Foot traffic/trampling 4 18%
ORV activity 4 18%
Recreational use (non-ORV) 3 13%
Road/trail construction/maint. 2 9%
Vandalism/dumping/litter 1 4%
Development 1 4%
Other 1 4%
Logging 1 4%

Notes
Threatened by vehicles, foot traffic, and logging. See North American Flora 21:328 (1932) for original description, and Madroño 37(1):63 (1990) for first KRN Co. record.
Threats:
Taxonomy:

Selected References

Citation California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 December 2024].