Taxon Report
Euphorbia misera Benth.cliff spurge |
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Taxon Summary
Euphorbia misera, commonly known as cliff spurge, is a perennial shrub in the Euphorbiaceae that is found in California and elsewhere. It occurs within Coastal bluff scrub, Coastal scrub, and Mojavean desert scrub, growing at elevations from 10 to 500 meters. Euphorbia misera is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Euphorbia misera Benth. |
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Common Name: |
cliff spurge |
| Family: | Euphorbiaceae |
| Element Code: | PDEUP0Q1B0 |
| USDA Plants Symbol: | EUMI4 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial shrub |
| Blooming Period: (Oct)Dec-Aug | (Oct)Dec-Aug |
| Elevation: | 10-500 (35-1640) |
| General Habitats: | Coastal bluff scrub, Coastal scrub, Mojavean desert scrub |
| Microhabitat: | Rocky |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 2B.2 |
| Global Rank: | G5 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG; SB_CRES |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 40 |
| Element Occurrence Ranks: | |
| Excellent (A) | 2 |
| Good (B) | 3 |
| Fair (C) | 6 |
| Poor (D) | 2 |
| None (X) | 1 |
| Unknown (U) | 26 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Los Angeles (LAX), Orange (ORA), Riverside (RIV), San Diego (SDG), Santa Barbara (SBA) | |
| Quads: Name (Quad Code) | |
| Dana Point (3311746), Del Mar (3211782), Desert Hot Springs (3311685), Encinitas (3311713), Imperial Beach (3211751), La Jolla (3211772), Laguna Beach (3311757), National City (3211761), Oceanside (3311724), Otay Mesa (3211658), Point Loma (3211762), San Clemente Island Central (3211874), San Clemente Island South (3211873), San Juan Capistrano (3311756), San Luis Rey (3311723)*, Santa Catalina North (3311844), Santa Cruz Island B (3311986), White Water (3311686) | |
Threat List Data from the CNDDB
| Threat List Total: | 10 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 18 | 45 % | |
| Development | 12 | 30% |
| Non-native plant impacts | 6 | 15% |
| Road/trail construction/maint. | 5 | 12% |
| Erosion/runoff | 3 | 7% |
| ORV activity | 3 | 7% |
| Other | 3 | 7% |
| Mining | 3 | 7% |
| Vandalism/dumping/litter | 2 | 5% |
| Foot traffic/trampling | 1 | 2% |
| Recreational use (non-ORV) | 1 | 2% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 8 February 2025].