Taxon Report
Astragalus jaegerianus MunzLane Mountain milk-vetch |
 © 2013 Xeric Specialties |
Taxon Summary
Astragalus jaegerianus, commonly known as Lane Mountain milk-vetch, is a perennial herb in the Fabaceae that is found only in California. It occurs within Joshua tree "woodland", and Mojavean desert scrub, growing at elevations from 900 to 1200 meters. Astragalus jaegerianus 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 jaegerianus Munz |
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Common Name: |
Lane Mountain milk-vetch |
| Family: | Fabaceae |
| Element Code: | PDFAB0F4F0 |
| USDA Plants Symbol: | ASJA |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial herb |
| Blooming Period: Apr-Jun | Apr-Jun |
| Elevation: | 900-1200 (2955-3935) |
| General Habitats: | Joshua tree "woodland", Mojavean desert scrub |
| Microhabitat: | Granitic, Gravelly (sometimes), Sandy (sometimes) |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.1 |
| Global Rank: | G2 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | FE |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 22 |
| Element Occurrence Ranks: | |
| Excellent (A) | 0 |
| Good (B) | 3 |
| Fair (C) | 2 |
| Poor (D) | 1 |
| None (X) | 0 |
| Unknown (U) | 16 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| San Bernardino (SBD) | |
| Quads: Name (Quad Code) | |
| East of Goldstone (3511637), Goldstone (3511638), Lane Mountain (3511618), Mud Hills (3511711), Paradise Range (3511627), Williams Well (3511628) | |
Threat List Data from the CNDDB
| Threat List Total: | 8 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 22 | 100 % | |
| Other | 22 | 100% |
| ORV activity | 17 | 77% |
| Mining | 15 | 68% |
| Non-native plant impacts | 9 | 40% |
| Recreational use (non-ORV) | 9 | 40% |
| Vandalism/dumping/litter | 9 | 40% |
| Military operations | 7 | 31% |
| Development | 4 | 18% |
Notes
| Known only from small, fragmented populations within and adjacent to Ft. Irwin (DOD). |
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Threats: |
| Threatened by mining, vehicles, military activities, nonnative plants, and fire. Also threatened by prolonged drought. |
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Taxonomy: |
| See Leaflets of Western Botany 3:49-80 (1941) for original description. |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 2 November 2025].