Taxon Report
Allium yosemitense Eastw.Yosemite onion |
 © 2012 Lynn Robertson |
Classification
|
Scientific Name: |
Allium yosemitense Eastw. |
|
Common Name: |
Yosemite onion |
| Family: | Alliaceae |
| Element Code: | PMLIL022L0 |
| USDA Plants Symbol: | ALYO |
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Synonyms/Other Names: |
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Ecology and Life History
| Lifeform: | perennial bulbiferous herb |
| Blooming Period: Apr-Jul | Apr-Jul |
| Elevation: | 535-2200 (1755-7220) |
| General Habitats: | Broadleafed upland forest, Chaparral, Cismontane woodland, Lower montane coniferous forest |
| Microhabitat: | Granitic (sometimes), Metamorphic (sometimes), Rocky |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.3 |
| Global Rank: | G3 |
|
State Rank: |
S3 |
| State List: | CR |
| Fed List: | None |
| Other Status: | SB_UCSC; USFS_S |
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CRPR Changes: |
|
Occurrence Data from the CNDDB
| Total Occurrences: | 14 |
| Element Occurrence Ranks: | |
| Excellent (A) | 4 |
| Good (B) | 1 |
| Fair (C) | 0 |
| Poor (D) | 1 |
| None (X) | 0 |
| Unknown (U) | 8 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Mariposa (MPA), Tuolumne (TUO) | |
| Quads: Name (Quad Code) | |
| Ascension Mtn. (3711978), Buckingham Mtn. (3711957), El Capitan (3711966), El Portal (3711967), Wawona (3711956) | |
Threat List Data from the CNDDB
| Threat List Total: | 5 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 4 | 29 % | |
| Erosion/runoff | 1 | 7% |
| Mining | 1 | 7% |
| Other | 1 | 7% |
| Recreational use (non-ORV) | 1 | 7% |
| Road/trail construction/maint. | 1 | 7% |
Notes
| Known from fewer than twenty occurrences. Possibly threatened by recreational activities. See Leaflets of Western Botany 1:132-133 (1934) for original description, Fremontia 8(1):15-18 (1980) for information on rediscovery, and Aliso 11(1):27-35 (1985) for taxonomic treatment. |
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Threats: |
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Taxonomy: |
Citation
California Native Plant Society, Rare Plant Program. 2024. Rare Plant Inventory (online edition, v9.5.1). Website https://www.rareplants.cnps.org [accessed 27 December 2024].