Taxon Report
Allium tribracteatum Torr.three-bracted onion |
 © 2018 Sierra Pacific Industries |
Classification
|
Scientific Name: |
Allium tribracteatum Torr. |
|
Common Name: |
three-bracted onion |
| Family: | Alliaceae |
| Element Code: | PMLIL022D0 |
| USDA Plants Symbol: | ALTR2 |
|
Synonyms/Other Names: |
|
Ecology and Life History
| Lifeform: | perennial bulbiferous herb |
| Blooming Period: Apr-Aug | Apr-Aug |
| Elevation: | 1100-3000 (3610-9845) |
| General Habitats: | Chaparral, Lower montane coniferous forest, Upper montane coniferous forest |
| Microhabitat: | Volcanic |
| Microhabitat Details: |
Conservation Status
| CA Rare Plant Rank: | 1B.2 |
| Global Rank: | G2 |
|
State Rank: |
S2 |
| State List: | None |
| Fed List: | None |
| Other Status: | SB_SBBG; USFS_S |
|
CRPR Changes: |
|
Occurrence Data from the CNDDB
| Total Occurrences: | 38 |
| Element Occurrence Ranks: | |
| Excellent (A) | 5 |
| Good (B) | 9 |
| Fair (C) | 2 |
| Poor (D) | 2 |
| None (X) | 0 |
| Unknown (U) | 20 |
| California Endemic: True | |
| California Counties and Islands: Name (Code) | |
| Alpine (ALP), Calaveras (CAL), El Dorado (ELD), Tuolumne (TUO) | |
| 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) | |
Threat List Data from the CNDDB
| Threat List Total: | 11 | |
| EOs with Threat Listed: | Total EOs | % of EOs |
| 23 | 61 % | |
| 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% |
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].