Taxon Report
Astragalus nyensis BarnebyNye milk-vetch |
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Taxon Summary
Astragalus nyensis, commonly known as Nye milk-vetch, is a annual herb in the Fabaceae that is found in California and elsewhere. It occurs within Mojavean desert scrub, growing at elevations from 790 to 815 meters. Astragalus nyensis is ranked 1B.1, Plants Rare, Threatened or Endangered in California and Elsewhere; Seriously threatened in California.Classification
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Scientific Name: |
Astragalus nyensis Barneby |
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Common Name: |
Nye milk-vetch |
| Family: | Fabaceae |
| Element Code: | PDFAB0F660 |
| USDA Plants Symbol: | ASNY2 |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual herb |
| Blooming Period: Apr-May | Apr-May |
| Elevation: | 790-815 (2590-2675) |
| General Habitats: | Mojavean desert scrub |
| Microhabitat: | Alkaline (sometimes), Gravelly, Sandy |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G3? |
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State Rank: |
S1 |
| State List: | None |
| Fed List: | None |
| Other Status: | BLM_S; SB_CalBG/RSABG |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 19 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 8 |
| Fair (C) | 9 |
| Poor (D) | 2 |
| None (X) | 0 |
| Unknown (U) | 0 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Inyo (INY) | |
| Quads: Name (Quad Code) | |
| Calvada Springs (3511588), Mound Spring (3611518), Stump Spring, Nev. (3511587) | |
Threat List Data from the CNDDB
| Threat List Total: | 3 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 19 | 100 % | |
| Non-native plant impacts | 19 | 100% |
| ORV activity | 18 | 94% |
| Development | 1 | 5% |
Notes
| Discovered in CA in 2011; known in CA only from Pahrump Valley. Seriously threatened by solar energy development. Possibly threatened by non-native plants. Similar to A. acutirostris and A. nuttallianus var. imperfectus. Not in The Jepson Manual (1993) and TJM 2. See Leaflets of Western Botany 3(5):97-114 (1942) for original description, and Leaflets of Western Botany 7(8):192-196 (1954) and Brittonia 42(2):100-104 (1990) for taxonomic treatments. |
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Threats: |
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Taxonomy: |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 4 April 2025].