Taxon Details
Allium tribracteatum
three-bracted onion
View Report Copy Link Calflora eFlora CCH CalPhotos iNaturalist
© 2018 Sierra Pacific Industries |
© 2011 Barry Breckling |
© 2004 Dean Wm. Taylor |
Taxon Summary:
Allium tribracteatum, commonly known as three-bracted onion, is a perennial bulbiferous herb in the Alliaceae that is found only in California. It occurs within Chaparral, Lower montane coniferous forest, and Upper montane coniferous forest, growing at elevations from 1100 to 3000 meters. Allium tribracteatum is ranked 1B.2, Plants Rare, Threatened or Endangered in California and Elsewhere; Moderately threatened in California.|
Scientific Name: Allium tribracteatum Torr. |
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Common Name: three-bracted onion |
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| Family: | Alliaceae | |
| Element Code: | PMLIL022D0 | |
| USDA Plants Symbol: | ALTR2 | |
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Synonyms/Other Names: |
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| Name Status: |
JEF, FNA, POWO, IPNI, Tropicos |
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| CA Rare Plant Rank: | 1B.2 |
| Fed List: | None |
| State List: | None |
| Global Rank: | G2 |
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State Rank: |
S2 |
| Other Status: | SB_SBBG; USFS_S |
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CRPR Changes: |
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| Add Date: | 1988-01-01 |
| Date Edited: | 2022-12-06 |
| Lifeform: perennial bulbiferous herb | ||||||||||||||
Blooming Period: Apr-Aug
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Elevation:
1100 - 3000 meters 3610 - 9845 feet |
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General Habitats:
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| Microhabitat Details: | ||||||||||||||
Microhabitat:
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| Threat List Total: | 11 | |
| Total EOs | % of EOs | |
| EOs with Threat Listed: | 23 | 61 % |
| THREAT LIST: | ||
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| ORV activity | 12 | 31% |
| Logging | 11 | 28% |
| Other | 7 | 18% |
| Road/trail construction/maint. | 6 | 15% |
| Recreational use (non-ORV) | 5 | 13% |
| Vandalism/dumping/litter | 4 | 10% |
| Non-native plant impacts | 3 | 7% |
| Foot traffic/trampling | 2 | 5% |
| Grazing | 2 | 5% |
| Wood cutting or brush clearing | 1 | 2% |
| Development | 1 | 2% |
| Total Occurrences: | 38 | ||||
| Element Occurrence Ranks: | |||||
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| A | B | C | D | X | U |
| 5 | 9 | 2 | 2 | 0 | 20 |
| Occurrence Status: | |||||
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| Historical >20 Years | 21 | ||||
| Recent <=20 Years | 17 | ||||
| Presence: | |||||
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| Presumed Extant | 38 | ||||
| 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) Alpine (ALP), Calaveras (CAL), El Dorado (ELD), Tuolumne (TUO) |
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Quads: Name (Quad Code) Boards Crossing (3812032), Crandall Peak (3812022), Dardanelle (3811937), Devils Nose (3812044), Garnet Hill (3812043), Hull Creek (3812011), Kibbie Lake (3811917), Lake Eleanor (3711987), Liberty Hill (3812031), Mokelumne Peak (3812051), Pyramid Peak (3812072), Strawberry (3812021), Tamarack (3812041), Tiltill Mtn. (3811916), Tragedy Spring (3812062), Twain Harte (3812012) |
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Notes:
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Presumed Extant
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