Taxon Report
Eryngium aristulatum Jeps. var. hooveri SheikhHoover's button-celery |
|
Taxon Summary
Eryngium aristulatum var. hooveri, commonly known as Hoover's button-celery, is a annual/perennial herb in the Apiaceae that is found only in California. It occurs within Vernal pools, growing at elevations from 3 to 45 meters. Eryngium aristulatum var. hooveri is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.Classification
|
Scientific Name: |
Eryngium aristulatum Jeps. var. hooveri Sheikh |
|
Common Name: |
Hoover's button-celery |
| Family: | Apiaceae |
| Element Code: | PDAPI0Z043 |
| USDA Plants Symbol: | ERARH |
|
Synonyms/Other Names: |
|
Ecology and Life History
| Lifeform: | annual/perennial herb |
| Blooming Period: (Jun)Jul(Aug) | (Jun)Jul(Aug) |
| Elevation: | 3-45 (10-150) |
| General Habitats: | Vernal pools |
| Microhabitat: | |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G5T1 |
|
State Rank: |
S1 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG |
|
CRPR Changes: |
|
Occurrence Data from the CNDDB
| Total Occurrences: | 16 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 2 |
| Fair (C) | 4 |
| Poor (D) | 0 |
| None (X) | 4 |
| Unknown (U) | 6 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Alameda (ALA), San Benito (SBT), San Luis Obispo (SLO), San Mateo (SMT), Santa Clara (SCL)(?) | |
| Quads: Name (Quad Code) | |
| Cambria (3512151)*, Chittenden (3612185), Gilroy (3712115), Milpitas (3712148), Mountain View (3712241)(?), Mt. Madonna (3712116), Newark (3712251), Palo Alto (3712242)(?), Pismo Beach (3512026), San Felipe (3612184), San Luis Obispo (3512036) | |
Threat List Data from the CNDDB
| Threat List Total: | 8 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 11 | 69 % | |
| Development | 9 | 56% |
| Grazing | 3 | 18% |
| Foot traffic/trampling | 2 | 12% |
| Road/trail construction/maint. | 2 | 12% |
| Wood cutting or brush clearing | 2 | 12% |
| Biocides | 1 | 6% |
| ORV activity | 1 | 6% |
| Other | 1 | 6% |
Notes
|
Almost all collections old; need information on extant occurrences. Is it extant in SCL Co.? ALA Co. occurrence (427B) needs confirmation. Many historical occurrences extirpated by agriculture, urbanization, and overgrazing. See Madroño |
|
Threats: |
|
Taxonomy: |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 15 November 2025].