Taxon Report
Eryngium racemosum Jeps.Delta button-celery |
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Taxon Summary
Eryngium racemosum, commonly known as Delta button-celery, is a annual/perennial herb in the Apiaceae that is found only in California. It occurs within Riparian scrub, growing at elevations from 3 to 30 meters. Eryngium racemosum is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.Classification
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Scientific Name: |
Eryngium racemosum Jeps. |
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Common Name: |
Delta button-celery |
| Family: | Apiaceae |
| Element Code: | PDAPI0Z0S0 |
| USDA Plants Symbol: | ERRA5 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual/perennial herb |
| Blooming Period: (May)Jun-Oct | (May)Jun-Oct |
| Elevation: | 3-30 (10-100) |
| General Habitats: | Riparian scrub |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G1 |
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State Rank: |
S1 |
| State List: | CE |
| Fed List: | None |
| Other Status: | |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 26 |
| Element Occurrence Ranks: | |
| Excellent (A) | 3 |
| Good (B) | 7 |
| Fair (C) | 2 |
| Poor (D) | 1 |
| None (X) | 7 |
| Unknown (U) | 6 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Calaveras (CAL), Contra Costa (CCA), Merced (MER), San Joaquin (SJQ)*, Stanislaus (STA) | |
| Quads: Name (Quad Code) | |
| Crows Landing (3712141)*, Gustine (3712038), Jenny Lind (3812017), Lathrop (3712173)*, Peters (3712181)*, Ripon (3712162)*, Salt Spring Valley (3812016), San Luis Ranch (3712027), Sandy Mush (3712025), Stevinson (3712037), Turlock Lake (3712055), Turner Ranch (3712026), Vernalis (3712163)*, Westley (3712152)*, Woodward Island (3712185) | |
Threat List Data from the CNDDB
| Threat List Total: | 13 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 17 | 65 % | |
| Grazing | 7 | 26% |
| Non-native plant impacts | 5 | 19% |
| Agriculture | 4 | 15% |
| Other | 3 | 11% |
| Recreational use (non-ORV) | 3 | 11% |
| Road/trail construction/maint. | 3 | 11% |
| Surface water diversion | 2 | 7% |
| Altered flood/tidal/hydrologic regime | 2 | 7% |
| ORV activity | 2 | 7% |
| Groundwater pumping | 1 | 3% |
| Improper burning regime | 1 | 3% |
| Disking | 1 | 3% |
| Erosion/runoff | 1 | 3% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 25 October 2025].