CNPS

CNPS Rare Plant Inventory

Species Details

Rhamnus pirifolia

island redberry

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  Classification

Scientific Name:
Rhamnus pirifolia Greene
Common Name:
island redberry
Family: Rhamnaceae
Element Code: PDRHA0C0A0
USDA Plants Symbol: RHPI
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 4.2
Fed List: None
State List: None
Global Rank: G4
State Rank:
 S4
Other Status: SB_CalBG/RSABG
CRPR Changes:
Add Date: 2001-01-01
Date Edited: 2021-05-26

  Ecology and Life History

Lifeform: perennial evergreen tree
Blooming Period: Feb-Jul
JFMAMJJASOND
Elevation:
20 - 430 meters
65 - 1410 feet
General Habitats:
  • Closed-cone coniferous forest
  • Chaparral
  • Cismontane woodland
  • Coastal scrub
Microhabitat Details:
Microhabitat:

  Notes

Notes:
Threatened by non-native feral herbivores on SCI Isl. Possibly threatened by development. See Pittonia 3:15 (1896) for original description.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 0
Total EOs % of EOs
EOs with Threat Listed: 0 0 %
THREAT LIST:

  Occurrence Data from the CNDDB

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

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA), Isla Guadalupe, Baja (GU)
California Counties and Islands: Name (Code)
Los Angeles (LAX), Santa Barbara (SBA)
Quads: Name (Quad Code)
San Clemente Island Central (3211874), San Clemente Island South (3211873), Santa Catalina East (3311833), Santa Catalina North (3311844), Santa Catalina South (3311834), Santa Catalina West (3311845), Santa Cruz Island B (3311986), Santa Cruz Island C (3311985), Santa Rosa Island South (3312071)
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 21 November 2024].