CNPS

CNPS Rare Plant Inventory

Species Details

Arctostaphylos stanfordiana ssp. raichei

Raiche's manzanita

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  Classification

Scientific Name:
Arctostaphylos stanfordiana Parry ssp. raichei Knight
Common Name:
Raiche's manzanita
Family: Ericaceae
Element Code: PDERI041G2
USDA Plants Symbol: ARSTR
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 1B.1
Fed List: None
State List: None
Global Rank: G3T2
State Rank:
 S2
Other Status: BLM_S; SB_CalBG/RSABG; SB_USDA
CRPR Changes:
Add Date: 1988-01-01
Date Edited: 2021-08-25

  Ecology and Life History

Lifeform: perennial evergreen shrub
Blooming Period: Feb-Apr
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Elevation:
450 - 1035 meters
1475 - 3395 feet
General Habitats:
  • Chaparral
  • Lower montane coniferous forest (openings)
Microhabitat Details:
Microhabitat:
  • Rocky
  • Serpentine (often)

  Notes

Notes:
Threatened by urbanization and vehicles. See Four Seasons 7(3):18 (1985) for original description.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 3
Total EOs % of EOs
EOs with Threat Listed: 2 15 %
THREAT LIST:
Mining 1 7%
ORV activity 1 7%
Road/trail construction/maint. 1 7%

  Occurrence Data from the CNDDB

Total Occurrences: 13
Element Occurrence Ranks:
A B C D X U
1 0 0 0 0 12
Occurrence Status:
Historical >20 Years 11
Recent <=20 Years 2
Presence:
Presumed Extant 13
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)
Quads: Name (Quad Code)
Clearlake Highlands (3812286), Cloverdale (3812371), Cow Mountain (3912321), Elledge Peak (3912312), Highland Springs (3812288), Hopland (3812381), Kelseyville (3812287)?, Leggett (3912376), Noble Butte (3912386), Orrs Springs (3912323), Purdys Gardens (3912311), Ukiah (3912322), Whispering Pines (3812276), Yorkville (3812382)
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

Suggested Citation:
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5). Website https://www.rareplants.cnps.org [accessed 18 April 2024].