Taxon Details
Euphorbia exstipulata var. exstipulata
Clark Mountain spurge
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Taxon Summary:
Euphorbia exstipulata var. exstipulata, commonly known as Clark Mountain spurge, is a annual herb in the Euphorbiaceae that is found in California and elsewhere. It occurs within Mojavean desert scrub, growing at elevations from 1280 to 2000 meters. Euphorbia exstipulata var. exstipulata is ranked 2B.1, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Seriously threatened in California.|
Scientific Name: Euphorbia exstipulata Engelm. var. exstipulata |
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Common Name: Clark Mountain spurge |
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| Family: | Euphorbiaceae | |
| Element Code: | PDEUP0Q0P1 | |
| 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: | 2B.1 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G5T5? |
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State Rank: |
S2 |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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| Add Date: | 1988-01-01 |
| Date Edited: | 2021-05-26 |
| Lifeform: annual herb | ||||||||||||||
Blooming Period: Sep
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Elevation:
1280 - 2000 meters 4200 - 6560 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
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Microhabitat:
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| Threat List Total: | 5 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 4 | 40 % |
| THREAT LIST: | ||
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| Mining | 4 | 40% |
| ORV activity | 3 | 30% |
| Vandalism/dumping/litter | 2 | 20% |
| Non-native animal impacts | 1 | 10% |
| Development | 1 | 10% |
| Total Occurrences: | 10 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 0 | 2 | 0 | 0 | 0 | 8 |
| Occurrence Status: | |||||
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| Historical >20 Years | 1 | ||||
| Recent <=20 Years | 9 | ||||
| Presence: | |||||
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| Presumed Extant | 10 | ||||
| Possibly Extirpated | 0 | ||||
| Presumed Extirpated | 0 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) Arizona (AZ), California (CA), New Mexico (NM), Oklahoma (OK), Texas (TX), Utah (UT), Wyoming (WY) |
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California Counties and Islands: Name (Code) San Bernardino (SBD) |
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Quads: Name (Quad Code) Castle Peaks (3511532), Clark Mtn. (3511555), Hart Peak (3511531), Ivanpah (3511533), Mescal Range (3511545), Mineral Hill (3511544), Pinto Valley (3511523) |
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Notes:
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Presumed Extant
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