CNPS

CNPS Rare Plant Inventory

Species Details

Eriogonum grande var. rubescens

red-flowered buckwheat

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  Classification

Scientific Name:
Eriogonum grande Greene var. rubescens (Greene) Munz
Common Name:
red-flowered buckwheat
Family: Polygonaceae
Element Code: PDPGN082J2
USDA Plants Symbol: ERGRR
Synonyms/Other Names:

  Conservation Status

CA Rare Plant Rank: 1B.2
Fed List: None
State List: None
Global Rank: G4T3
State Rank:
 S3
Other Status:
CRPR Changes:
Add Date: 1980-01-01
Date Edited: 2021-05-26

  Ecology and Life History

Lifeform: perennial herb
Blooming Period: Apr-Oct
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Elevation:
10 - 245 meters
35 - 805 feet
General Habitats:
  • Coastal bluff scrub
  • Chaparral
  • Coastal scrub
Microhabitat Details:
Microhabitat:

  Notes

Notes:
Threatened by feral herbivores, and by cattle grazing on SRO Isl. Includes E. grande var. dunklei. See Pittonia 1:39 (1887) for original description, and Phytologia 66(4):333-334 (1989) for taxonomic treatment.
Threats:
Taxonomy:

  Threat List Data from the CNDDB

Threat List Total: 1
Total EOs % of EOs
EOs with Threat Listed: 4 13 %
THREAT LIST:
Erosion/runoff 4 12%

  Occurrence Data from the CNDDB

Total Occurrences: 31
Element Occurrence Ranks:
A B C D X U
0 4 1 0 0 26
Occurrence Status:
Historical >20 Years 31
Recent <=20 Years 0
Presence:
Presumed Extant 31
Possibly Extirpated 0
Presumed Extirpated 0

  Location

California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Santa Barbara (SBA)
Quads: Name (Quad Code)
San Miguel Island East (3312083), San Miguel Island West (3312084), Santa Cruz Island A (3311987), Santa Rosa Island East (3311988), Santa Rosa Island North (3312081), Santa Rosa Island South (3312071), Santa Rosa Island West (3312082)
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].