Taxon Details
Astragalus magdalenae var. peirsonii
Peirson's milk-vetch
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Taxon Summary:
Astragalus magdalenae var. peirsonii, commonly known as Peirson's milk-vetch, is a perennial herb in the Fabaceae that is found in California and elsewhere. It occurs within Desert dunes, growing at elevations from 60 to 225 meters. Astragalus magdalenae var. peirsonii is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.|
Scientific Name: Astragalus magdalenae Greene var. peirsonii (Munz & McBurn.) Barneby |
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Common Name: Peirson's milk-vetch |
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| Family: | Fabaceae | |
| Element Code: | PDFAB0F532 | |
| USDA Plants Symbol: | ASMAP | |
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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: | FT (1998-10-06) |
| State List: | CE (1979-11-01) |
| Global Rank: | G3G4T1 |
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State Rank: |
S1 |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2021-05-26 |
| Lifeform: perennial herb | ||||||||||||||
Blooming Period: Dec-Apr
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Elevation:
60 - 225 meters 195 - 740 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
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Microhabitat:
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Notes: One location in Anza-Borrego does not appear to be a naturally occurring population; DNA analysis pending. Plant not seen in SDG Co. in several decades. Threatened by vehicles in the Algodones Dunes. Threatened elsewhere by vehicles, grazing and trampling, foot traffic, non-native plants, development, and hydrological alterations. See Bulletin of the Southern California Academy of Sciences 31:67 (1932) for original description, and Memoirs of the New York Botanical Garden 13:928 (1964) for taxonomic treatment. |
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Threats: |
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Taxonomy: |
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| Threat List Total: | 2 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 1 | 33 % |
| THREAT LIST: | ||
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| ORV activity | 1 | 33% |
| Other | 1 | 33% |
| Total Occurrences: | 3 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 0 | 1 | 0 | 0 | 2 | 0 |
| Occurrence Status: | |||||
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| Historical >20 Years | 1 | ||||
| Recent <=20 Years | 2 | ||||
| Presence: | |||||
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| Presumed Extant | 1 | ||||
| Possibly Extirpated | 1 | ||||
| Presumed Extirpated | 1 | ||||
| California Endemic: | |||||||||||||
| California Island: | |||||||||||||
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States: Name (Code) Arizona (AZ), Baja California (BA), California (CA), Sonora, Mexico (SO) |
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California Counties and Islands: Name (Code) Imperial (IMP), San Diego (SDG)(?) |
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Quads: Name (Quad Code) Grays Well (3211468), Grays Well NE (3211467), Acolita (3311512), Amos (3311513), Borrego Mountain (3311622), Borrego Sink (3311623), Cactus (3211478), Clark Lake (3311633)(?), Clyde (3211488), East of Acolita (3311511), Glamis (3211581), Glamis NW (3211582), Glamis SE (3211571), Tortuga (3311523) |
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Notes:
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Presumed Extant
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