Species Details
Astragalus agnicidus
Humboldt County milk-vetch
Download Report Calflora eFlora CCH CalPhotos
©2004 Dean Wm. Taylor |
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Scientific Name: Astragalus agnicidus Barneby |
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Common Name: Humboldt County milk-vetch |
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| Family: | Fabaceae | |
| Element Code: | PDFAB0F080 | |
| USDA Plants Symbol: | ASAG | |
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Synonyms/Other Names: |
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| CA Rare Plant Rank: | 1B.1 |
| Fed List: | None |
| State List: | CE (1982-04-01) |
| Global Rank: | G2 |
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State Rank: |
S2 |
| Other Status: | BLM_S; SB_BerrySB; SB_CalBG/RSABG |
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CRPR Changes: |
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| Add Date: | 1974-01-01 |
| Date Edited: | 2024-11-05 |
| Lifeform: perennial herb | ||||||||||||||
Blooming Period: (Mar)Apr-Sep
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Elevation:
120 - 800 meters 395 - 2625 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
Microhabitat:
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Notes: Rediscovered in 1987 by R. Sutherland, R. Bittman, and K. Berg near Miranda. See Madroño 14(1):37-40 (1957) for original description, Fremontia 16(1):13-14 (1988) for discussion of rediscovery and 20(4):21-22 (1992) for management update, and Madroño 46(4):215 (1999) for occurrence information. |
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Threats: Threatened by grazing, competition, logging, and road maintenance. Potentially threatened by habitat alteration and non-native plants. |
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Taxonomy: |
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| Threat List Total: | 10 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 61 | 88 % |
| THREAT LIST: | ||
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| Road/trail construction/maint. | 46 | 66% |
| Logging | 45 | 65% |
| Other | 32 | 46% |
| Non-native plant impacts | 12 | 17% |
| ORV activity | 11 | 15% |
| Erosion/runoff | 5 | 7% |
| Wood cutting or brush clearing | 3 | 4% |
| Biocides | 1 | 1% |
| Foot traffic/trampling | 1 | 1% |
| Grazing | 1 | 1% |
| Total Occurrences: | 69 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 3 | 23 | 23 | 15 | 0 | 5 |
| Occurrence Status: | |||||
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| Historical >20 Years | 6 | ||||
| Recent <=20 Years | 63 | ||||
| Presence: | |||||
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| Presumed Extant | 69 | ||||
| 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) Humboldt (HUM), Mendocino (MEN), Santa Cruz (SCR) |
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Quads: Name (Quad Code) Bailey Ridge (3912324), Bridgeville (4012347), Burbeck (3912344), Cahto Peak (3912365), Cold Spring (3912315), Dutchmans Knoll (3912356), Felton (3712211), Greenough Ridge (3912334), Gualala (3812375), Hales Grove (3912377), Lincoln Ridge (3912366), Mallo Pass Creek (3912316), McGuire Ridge (3812374), Miranda (4012327), Myers Flat (4012337), Navarro (3912325), Northspur (3912345), Noyo Hill (3912346), Sherwood Peak (3912355), Westport (3912367) |
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Notes:
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Presumed Extant
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