CNPS

CNPS Rare Plant Inventory

Species Details

Eriogonum apricum var. prostratum

Irish Hill buckwheat

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  Classification

Scientific Name:
Eriogonum apricum J.T. Howell var. prostratum Myatt
Common Name:
Irish Hill buckwheat
Family: Polygonaceae
Element Code: PDPGN080F2
USDA Plants Symbol: ERAPP
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 1B.1
Fed List: FE (1999-05-26)
State List: CE (1987-01-01)
Global Rank: G2T1
State Rank:
 S1
Other Status:
CRPR Changes:
Add Date: 1974-01-01
Date Edited: 2021-05-26

  Ecology and Life History

Lifeform: perennial herb
Blooming Period: Jun-Jul
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Elevation:
90 - 120 meters
295 - 395 feet
General Habitats:
  • Chaparral (openings, Ione soil)
Microhabitat Details:
Microhabitat:

  Notes

Notes:
Known from only two occurrences near Irish Hill and Carbondale Mesa on the Ione Formation. Threatened by vehicles, mining, and erosion. See Madroño 20(6):320 (1970) for original description, and Phytologia 66(4):320-321 (1989) for taxonomic treatment.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 5
Total EOs % of EOs
EOs with Threat Listed: 2 100 %
THREAT LIST:
Mining 2 100%
ORV activity 1 50%
Road/trail construction/maint. 1 50%
Development 1 50%
Grazing 1 50%

  Occurrence Data from the CNDDB

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

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Amador (AMA)
Quads: Name (Quad Code)
Carbondale (3812141), Irish Hill (3812048)
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 23 April 2024].