All Species in Allium
- Abrams' Allium (Allium abramsii)
- Autumn Onion (Allium stellatum)
- Beegum Onion (Allium hoffmanii)
- Bigelow's Onion (Allium bigelovii)
- Blue Mountain Onion (Allium dictuon)
- Bolander's Onion (Allium bolanderi)
- Brandegee's Onion (Allium brandegeei)
- Broadstemmed Onion (Allium platycaule)
- Burlew's Onion (Allium burlewii)
- Cascade Onion (Allium cratericola)
- Coastal Onion (Allium dichlamydeum)
- Columbian Onion (Allium columbianum)
- Crinkled Onion (Allium crispum)
- Cuddy Mountain Onion (Allium fibrillum)
- Darkred Onion (Allium atrorubens)
- Dotted Onion (Allium punctum)
- Douglas' Onion (Allium douglasii)
- Drummond's Onion (Allium drummondii)
- Dusky Onion (Allium campanulatum)
- Early Onion (Allium praecox)
- Elmendorf's Onion (Allium elmendorfii)
- Fragile Onion (Allium scilloides)
- Fringed Onion (Allium fimbriatum)
- Geyer's Onion (Allium geyeri)
- Gland Onion (Allium glandulosum)
- Glassy Onion (Allium hyalinum)
- Goodding's Onion (Allium gooddingii)
- Grand Coulee Onion (Allium constrictum)
- Hickman's Onion (Allium hickmanii)
- Howell's Onion (Allium howellii)
- Jepson's Onion (Allium jepsonii)
- Jeweled Onion (Allium serra)
- Kunth's Onion (Allium longifolium)
- Largeflower Onion (Allium macropetalum)
- Lemmon's Onion (Allium lemmonii)
- Little River Canyon Onion (Allium speculae)
- Manyflower Onion (Allium tolmiei var. tolmiei)
- Meadow Garlic (Allium canadense)
- Mexicali Onion (Allium peninsulare)
- Munz's Onion (Allium munzii)
- Narrowleaf Onion (Allium amplectens)
- Narrowleaf Wild Leek (Allium burdickii)
- Nevada Onion (Allium nevadense)
- Nevius' Garlic (Allium nevii)
- Nodding Onion (Allium cernuum)
- Olympic Onion (Allium crenulatum)
- Oneleaf Onion (Allium unifolium)
- Pacific Onion (Allium validum)
- Papery Onion (Allium membranaceum)
- Parish's Onion (Allium parishii)
- Parry's Fringed Onion (Allium parryi)
- Passey's Onion (Allium passeyi)
- Pitted Onion (Allium lacunosum)
- Plains Onion (Allium perdulce)
- Ramp (Allium tricoccum)
- Rawhide Hill Onion (Allium tuolumnense)
- Red Sierra Onion (Allium obtusum)
- Redskin Onion (Allium haematochiton)
- Robinson'S Onion (Allium robinsonii)
- Rock Onion (Allium macrum)
- Runyon's Onion (Allium runyonii)
- San Bernardino Mountain Onion (Allium monticola)
- Sanborn's Onion (Allium sanbornii)
- Scytheleaf Onion (Allium falcifolium)
- Serpentine Onion (Allium diabolense)
- Sharsmith's Onion (Allium sharsmithiae)
- Shortstyle Onion (Allium brevistylum)
- Simil Onion (Allium simillimum)
- Siskiyou Onion (Allium siskiyouense)
- Small Onion (Allium parvum)
- South Idaho Onion (Allium aaseae)
- Spanish Needle Onion (Allium shevockii)
- Striped Garlic (Allium cuthbertii)
- Swamp Onion (Allium madidum)
- Tanners Canyon Onion (Allium plummerae)
- Tapertip Onion (Allium acuminatum)
- Textile Onion (Allium textile)
- Threebract Onion (Allium tribracteatum)
- Tolmie's Onion (Allium tolmiei)
- Twincrest Onion (Allium bisceptrum)
- Twinleaf Onion (Allium anceps)
- Victory Onion (Allium victorialis)
- Yellowflower Onion (Allium coryi)
- Yosemite Onion (Allium yosemitense)