Taxon Report
Astragalus insularis Kell. var. harwoodii Munz & McBurn.Harwood's milk-vetch |
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Taxon Summary
Astragalus insularis var. harwoodii, commonly known as Harwood's milk-vetch, is a annual herb in the Fabaceae that is found in California and elsewhere. It occurs within Desert dunes, and Mojavean desert scrub, growing at elevations from 0 to 710 meters. Astragalus insularis var. harwoodii is ranked 2B.2, Plants Rare, Threatened, or Endangered in California, But More Common Elsewhere; Moderately threatened in California.Classification
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Scientific Name: |
Astragalus insularis Kell. var. harwoodii Munz & McBurn. |
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Common Name: |
Harwood's milk-vetch |
| Family: | Fabaceae |
| Element Code: | PDFAB0F491 |
| USDA Plants Symbol: | ASINH |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | annual herb |
| Blooming Period: Jan-May | Jan-May |
| Elevation: | 0-710 (0-2330) |
| General Habitats: | Desert dunes, Mojavean desert scrub |
| Microhabitat: | Gravelly (sometimes), Sandy (sometimes) |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 2B.2 |
| Global Rank: | G5T4 |
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State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_CalBG/RSABG |
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CRPR Changes: |
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Occurrence Data from the CNDDB
| Total Occurrences: | 120 |
| Element Occurrence Ranks: | |
| Excellent (A) | 2 |
| Good (B) | 32 |
| Fair (C) | 30 |
| Poor (D) | 18 |
| None (X) | 0 |
| Unknown (U) | 38 |
| California Endemic: False | |
| California Counties and Islands: Name (Code) | |
| Imperial (IMP), Riverside (RIV), San Bernardino (SBD), San Diego (SDG) | |
| Quads: Name (Quad Code) | |
| Grays Well NE (3211467), Agua Caliente Springs (3211683), Araz (3211476), Arica Mountains (3411418), Arroyo Tapiado (3211682), Aztec Mines (3311552), Blythe (3311455), Borrego Mountain SE (3311611), Buzzard Spring (3311575), Carrizo Mtn. (3211671), Carrizo Mtn. NE (3211681), Conejo Well (3311576), Corn Spring (3311563), Coyote Wells (3211568), Desert Center (3311564), East of Granite Pass (3411511), East of Red Canyon (3311555), East of Victory Pass (3311573), Ford Dry Lake (3311561), Harper Canyon (3311612), Hayfield Spring (3311565), Hopkins Well (3311458), In-ko-pah Gorge (3211661), Kane Spring NE (3311527), Little Maria Mts. (3311488), McCoy Peak (3311467), McCoy Spring (3311468), McCoy Wash (3311466), Ogilby (3211477), Painted Gorge (3211578), Pilot Mountain (3311553), Pinto Mountain (3311587), Placer Canyon (3311585), Red Cloud Canyon (3311554), Rice (3411417), Ripley (3311456), Roosevelt Mine (3311457), San Bernardino Wash (3311586), Sidewinder Well (3311562), Styx (3311487), Sweeney Pass (3211672), Thumb Peak (3311447), West of Palen Pass (3311582), Wister (3311535), Yuma West (3211466) | |
Threat List Data from the CNDDB
| Threat List Total: | 8 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 89 | 74 % | |
| Development | 76 | 63% |
| ORV activity | 73 | 60% |
| Non-native plant impacts | 41 | 34% |
| Grazing | 4 | 3% |
| Road/trail construction/maint. | 3 | 2% |
| Vandalism/dumping/litter | 1 | 0% |
| Mining | 1 | 0% |
| Erosion/runoff | 1 | 0% |
Citation
California Native Plant Society, Rare Plant Program. 2025. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 5 February 2025].