Species Details

Allium hickmanii

Hickman's onion

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Photo of Allium hickmanii
© 2017 Dylan Neubauer
Photo of Allium hickmanii
© 2019 Aaron Schusteff
Photo of Allium hickmanii
© 2019 Aaron Schusteff
Lifeform: perennial bulbiferous herb
Blooming Period: Mar-May
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Elevation:
5 - 200 meters
15 - 655 feet
General Habitats:
  • Closed-cone coniferous forest
  • Chaparral (maritime)
  • Coastal prairie
  • Coastal scrub
  • Valley and foothill grassland
Microhabitat Details:
Microhabitat:
Notes:
Threatened by urbanization, grazing, non-native plants, trampling, road construction, and military activities. See Bulletin of the Torrey Botanical Club 30:483-502 (1903) for original description.
Threats:
Taxonomy:
Threat List Total: 11
Total EOs % of EOs
EOs with Threat Listed: 22 69 %
THREAT LIST:
Development 10 31%
Grazing 5 15%
Foot traffic/trampling 4 12%
Road/trail construction/maint. 3 9%
Erosion/runoff 2 6%
Total Occurrences: 32
Element Occurrence Ranks:
A B C D X U
4 6 1 0 0 21
Occurrence Status:
Historical >20 Years 23
Recent <=20 Years 9
Presence:
Presumed Extant 32
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Monterey (MNT), San Luis Obispo (SLO)
Quads: Name (Quad Code)
Burro Mountain (3512173), Cape San Martin (3512184), Marina (3612167), Monterey (3612158), Pico Creek (3512152), Piedras Blancas (3512163), Salinas (3612166), San Simeon (3512162), Seaside (3612157)
Notes:
Definitions of codes following a county and/or quad:
* Presumed extirpated
(?) Occurrence confirmed, but possibly extirpated
Quad and county data is imported from the CNDDB. Species may be present in other areas where conditions are favorable. These data should NOT be substituted for pre-project review or for on-site surveys.
Presumed Extant
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