Taxon Report
Eriogonum butterworthianum J.T. HowellButterworth's buckwheat |
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Taxon Summary
Eriogonum butterworthianum, commonly known as Butterworth's buckwheat, is a perennial herb in the Polygonaceae that is found only in California. It occurs within Chaparral (sandstone), and Valley and foothill grassland, growing at elevations from 585 to 740 meters. Eriogonum butterworthianum is ranked 1B.3, Plants Rare, Threatened or Endangered in California and Elsewhere; Not very threatened in California.Classification
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Scientific Name: |
Eriogonum butterworthianum J.T. Howell |
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Common Name: |
Butterworth's buckwheat |
| Family: | Polygonaceae |
| Element Code: | PDPGN080X0 |
| USDA Plants Symbol: | ERBU2 |
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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: | 585-740 (1920-2430) |
| General Habitats: | Chaparral, Valley and foothill grassland |
| Microhabitat: | Sandy |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.3 |
| Global Rank: | G2 |
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State Rank: |
S2 |
| State List: | CR |
| Fed List: | None |
| Other Status: | BLM_S; SB_UCSC; USFS_S |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 4 |
| Element Occurrence Ranks: | |
| Excellent (A) | 2 |
| Good (B) | 0 |
| Fair (C) | 0 |
| Poor (D) | 0 |
| None (X) | 0 |
| Unknown (U) | 2 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Monterey (MNT) | |
| Quads: Name (Quad Code) | |
| Cone Peak (3612114), Junipero Serra Peak (3612124), Reliz Canyon (3612123) | |
Threat List Data from the CNDDB
| Threat List Total: | 2 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 1 | 25 % | |
| Foot traffic/trampling | 1 | 25% |
| Other | 1 | 25% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 1 March 2025].