Taxon Report
Eriogonum nudum Benth. var. regirivum Rev. & J. StebbinsKings River buckwheat |
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Taxon Summary
Eriogonum nudum var. regirivum, commonly known as Kings River buckwheat, is a perennial herb in the Polygonaceae that is found only in California. It occurs within Cismontane woodland (carbonate, and rocky), growing at elevations from 150 to 300 meters. Eriogonum nudum var. regirivum is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Eriogonum nudum Benth. var. regirivum Rev. & J. Stebbins |
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Common Name: |
Kings River buckwheat |
| Family: | Polygonaceae |
| Element Code: | PDPGN0849F |
| USDA Plants Symbol: | ERNUR |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Aug-Nov | Aug-Nov |
| Elevation: | 150-300 (490-985) |
| General Habitats: | Cismontane woodland |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G5T2 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 5 |
| Element Occurrence Ranks: | |
| Excellent (A) | 1 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 4 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Fresno (FRE) | |
| Quads: Name (Quad Code) | |
| Hume (3611878), Luckett Mtn. (3611972), Miramonte (3611961), Pine Flat Dam (3611973), Tucker Mtn. (3611962), Verplank Ridge (3611971) | |
Threat List Data from the CNDDB
| Threat List Total: | 1 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 1 | 20 % | |
| Erosion/runoff | 1 | 20% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 December 2025].