CNPS

CNPS Rare Plant Inventory

Species Details

Arctostaphylos montaraensis

Montara manzanita

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Photo of Arctostaphylos montaraensis
© 2016 Neal Kramer 		Photo of Arctostaphylos montaraensis
© 2011 Thomas Reyes 		Photo of Arctostaphylos montaraensis
© 2018 Aaron Schusteff

  Classification

Scientific Name:
Arctostaphylos montaraensis Roof
Common Name:
Montara manzanita
Family: Ericaceae
Element Code: PDERI042W0
USDA Plants Symbol: ARMO5
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 1B.2
Fed List: None
State List: None
Global Rank: G1
State Rank:
 S1
Other Status: SB_CalBG/RSABG; SB_USDA
CRPR Changes:
Add Date: 1974-01-01
Date Edited: 2022-02-01

  Ecology and Life History

Lifeform: perennial evergreen shrub
Blooming Period: Jan-Mar
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Elevation:
80 - 500 meters
260 - 1640 feet
General Habitats:
  • Chaparral (maritime)
  • Coastal scrub
Microhabitat Details:
Microhabitat:

  Notes

Notes:
Known from fewer than ten occurrences. Threatened by development and vehicles. See Four Seasons 2(3):8 (1967) for original description.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 7
Total EOs % of EOs
EOs with Threat Listed: 3 75 %
THREAT LIST:
Improper burning regime 2 50%
Non-native plant impacts 2 50%
Road/trail construction/maint. 2 50%
Wood cutting or brush clearing 1 25%
Other 1 25%

  Occurrence Data from the CNDDB

Total Occurrences: 4
Element Occurrence Ranks:
A B C D X U
2 0 1 1 0 0
Occurrence Status:
Historical >20 Years 2
Recent <=20 Years 2
Presence:
Presumed Extant 4
Possibly Extirpated 0
Presumed Extirpated 0

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
San Mateo (SMT)
Quads: Name (Quad Code)
Montara Mountain (3712254), San Francisco South (3712264)
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. 2023. Rare Plant Inventory (online edition, v9.5). Website https://www.rareplants.cnps.org [accessed 29 November 2023].