Taxon Details
Euphorbia jaegeri
Orocopia Mountains spurge
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Keir Morse |
Keir Morse |
James M. Andre |
Taxon Summary:
Euphorbia jaegeri, commonly known as Orocopia Mountains spurge, is a perennial shrub in the Euphorbiaceae that is found only in California. It occurs within Mojavean desert scrub, growing at elevations from 600 to 850 meters. Euphorbia jaegeri is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.|
Scientific Name: Euphorbia jaegeri V.W. Steinmann & J. Andre´ |
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Common Name: Orocopia Mountains spurge |
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| Family: | Euphorbiaceae | |
| Element Code: | PDEUP0Q440 | |
| USDA Plants Symbol: | ||
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Synonyms/Other Names: |
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| Name Status: |
JEF, FNA, POWO, IPNI, Tropicos |
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| CA Rare Plant Rank: | 1B.1 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G1 |
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State Rank: |
S1 |
| Other Status: | |
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CRPR Changes: added to 1B.1 on 2013-01-17 |
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| Add Date: | 2013-01-17 |
| Date Edited: | 2025-01-07 |
| Lifeform: perennial shrub | ||||||||||||||
Blooming Period: Oct-May
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Elevation:
600 - 850 meters 1970 - 2790 feet |
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General Habitats:
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| Microhabitat Details: Rocky hillsides and arroyos, gravelly or rocky crevices | ||||||||||||||
Microhabitat:
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Notes: Known only from the Bristol, Marble, and Orocopia Mtns. Potentially occurs in the Coxcomb, Eagle, Iron, and Sheephole Mtns.; needs field surveys. |
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Threats: Threatened by road maintenance and mining. Potentially threatened by wind energy development. |
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Taxonomy: Similar to E. polycarpa and E. setiloba (see Chamaesyce polycarpa and C. setiloba in TJM 2). Not in TJM 2. See Aliso 30:1-4 (2012) for original description. |
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| Threat List Total: | 3 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 4 | 100 % |
| THREAT LIST: | ||
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| Development | 4 | 100% |
| Mining | 3 | 75% |
| Road/trail construction/maint. | 1 | 25% |
| Total Occurrences: | 4 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 0 | 1 | 3 | 0 | 0 | 0 |
| Occurrence Status: | |||||
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| Historical >20 Years | 1 | ||||
| Recent <=20 Years | 3 | ||||
| Presence: | |||||
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| Presumed Extant | 4 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) California (CA) |
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California Counties and Islands: Name (Code) Riverside (RIV), San Bernardino (SBD) |
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Quads: Name (Quad Code) Amboy (3411556), Cadiz (3411555), East of Siberia (3411567), Hayfield (3311566) |
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Notes:
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Presumed Extant
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