Species Details

Allium howellii var. howellii

Howell's onion

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Photo of Allium howellii var. howellii
© 2013 Neal Kramer
Photo of Allium howellii var. howellii
© 2016 Keir Morse
Photo of Allium howellii var. howellii
© 2020 Chris Winchell
Scientific Name:
Allium howellii Eastw. var. howellii
Common Name:
Howell's onion
Family: Alliaceae
Element Code: PMLIL02162
USDA Plants Symbol: ALHOH
Synonyms/Other Names:
Lifeform: perennial bulbiferous herb
Blooming Period: Mar-Apr
50 - 2200 meters
165 - 7220 feet
General Habitats:
  • Valley and foothill grassland
Microhabitat Details:
  • Clay (sometimes)
  • Serpentinite (sometimes)
Many occurrences historical; need field surveys. Possibly threatened by grazing and development. See Leaflets of Western Botany 2(7):109 (1938) for original description.
Total Occurrences: 0
Element Occurrence Ranks:
0 0 0 0 0 0
Occurrence Status:
Historical >20 Years 0
Recent <=20 Years 0
Presumed Extant 0
Possibly Extirpated 0
Presumed Extirpated 0
California Endemic:
California Island:
States: Name (Code)
California (CA)
California Counties and Islands: Name (Code)
Fresno (FRE), Kern (KRN), Merced (MER), San Benito (SBT), San Luis Obispo (SLO), Santa Clara (SCL), Tulare (TUL)
Quads: Name (Quad Code)
Alta Sierra (3511865), Ballinger Canyon (3411984), Bena (3511836), Breckenridge Mtn. (3511845), Caliente Mtn. (3511917), California Valley (3512031), Cerro Colorado (3612068), Chimineas Ranch (3511928), Delano West (3511973), Democrat Hot Springs (3511856), Edison (3511837), Elkhorn Hills (3511915), Fellows (3511925), Hammonds Ranch (3612076), Hepsedam Peak (3612037), Keene (3511825), Knob Hill (3511858), Lake Isabella North (3511864), Maricopa (3511914), McKittrick Summit (3511937), Mercey Hot Springs (3612067), Monolith (3511813), Oil Center (3511848), Oiler Peak (3511835), Ortigalita Peak (3612078), Packwood Creek (3512051), Painted Rock (3511927), Panoche (3612057), Panoche Pass (3612161), Panorama Hills (3511926), Pentland (3511913), Pine Mountain (3511857), Pozo Summit (3512033), Rio Bravo Ranch (3511847), San Felipe (3612184), Sand Canyon (3511868), Santa Margarita Lake (3512034), Shale Point (3511958), Simmler (3511938), Tehachapi NE (3511823), Tehachapi North (3511824), Tehachapi South (3511814), Tejon Hills (3511817), Tent Hills (3512072), The Dark Hole (3512083), Wells Ranch (3511916), White River (3511877), Woody (3511867)
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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