Taxon Report
Eriogonum apricum J.T. Howell var. prostratum MyattIrish Hill buckwheat |
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Taxon Summary
Eriogonum apricum var. prostratum, commonly known as Irish Hill buckwheat, is a perennial herb in the Polygonaceae that is found only in California. It occurs within Chaparral (openings, and Ione soil), growing at elevations from 90 to 120 meters. Eriogonum apricum var. prostratum is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.Classification
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Scientific Name: |
Eriogonum apricum J.T. Howell var. prostratum Myatt |
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Common Name: |
Irish Hill buckwheat |
| Family: | Polygonaceae |
| Element Code: | PDPGN080F2 |
| USDA Plants Symbol: | ERAPP |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Jun-Jul | Jun-Jul |
| Elevation: | 90-120 (295-395) |
| General Habitats: | Chaparral |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G2T1 |
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State Rank: |
S1 |
| State List: | CE |
| Fed List: | FE |
| Other Status: | |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 2 |
| Element Occurrence Ranks: | |
| Excellent (A) | 1 |
| Good (B) | 1 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 0 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Amador (AMA) | |
| Quads: Name (Quad Code) | |
| Carbondale (3812141), Irish Hill (3812048) | |
Threat List Data from the CNDDB
| Threat List Total: | 5 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 2 | 100 % | |
| Mining | 2 | 100% |
| ORV activity | 1 | 50% |
| Road/trail construction/maint. | 1 | 50% |
| Development | 1 | 50% |
| Grazing | 1 | 50% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 16 November 2025].