Taxon Details
Dudleya abramsii ssp. affinis
San Bernardino Mountains dudleya
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Taxon Summary:
Dudleya abramsii ssp. affinis, commonly known as San Bernardino Mountains dudleya, is a perennial herb in the Crassulaceae that is found only in California. It occurs within Pebble (Pavement) plain, Pinyon and juniper woodland, and Upper montane coniferous forest, growing at elevations from 1250 to 2600 meters. Dudleya abramsii ssp. affinis is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.|
Scientific Name: Dudleya abramsii Rose ssp. affinis K. Nakai |
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Common Name: San Bernardino Mountains dudleya |
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| Family: | Crassulaceae | |
| Element Code: | PDCRA04013 | |
| USDA Plants Symbol: | DUABA2 | |
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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.2 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G4T2 |
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State Rank: |
S2 |
| Other Status: | BLM_S; SB_CalBG/RSABG; USFS_S |
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CRPR Changes: |
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| Add Date: | 1988-01-01 |
| Date Edited: | 2021-12-09 |
| Lifeform: perennial herb | ||||||||||||||
Blooming Period: Apr-Jul
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Elevation:
1250 - 2600 meters 4100 - 8530 feet |
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General Habitats:
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| Microhabitat Details: sometimes quartzite | ||||||||||||||
Microhabitat:
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Notes: Known only from the San Bernardino Mtns. Threatened by development, foot traffic, limestone mining, and vehicles. Possibly threatened by non-native plants and illegal dumping. See Madroño 34(4):349 (1987) for original description. |
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Threats: Threatened by development, foot traffic, limestone mining, and vehicles. Possibly threatened by non-native plants and illegal dumping. |
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Taxonomy: |
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| Threat List Total: | 11 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 18 | 33 % |
| THREAT LIST: | ||
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| ORV activity | 8 | 14% |
| Mining | 7 | 12% |
| Foot traffic/trampling | 5 | 9% |
| Non-native plant impacts | 3 | 5% |
| Road/trail construction/maint. | 3 | 5% |
| Vandalism/dumping/litter | 2 | 3% |
| Grazing | 2 | 3% |
| Improper burning regime | 1 | 1% |
| Other | 1 | 1% |
| Recreational use (non-ORV) | 1 | 1% |
| Development | 1 | 1% |
| Total Occurrences: | 54 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 0 | 7 | 1 | 0 | 0 | 46 |
| Occurrence Status: | |||||
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| Historical >20 Years | 18 | ||||
| Recent <=20 Years | 36 | ||||
| Presence: | |||||
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| Presumed Extant | 54 | ||||
| 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) San Bernardino (SBD) |
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Quads: Name (Quad Code) Apple Valley South (3411742), Big Bear City (3411637), Butler Peak (3411731), Fawnskin (3411638), Lake Arrowhead (3411732), Moonridge (3411627), Onyx Peak (3411626), Rattlesnake Canyon (3411636) |
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Notes:
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Presumed Extant
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