- Aletris farinosa — white-tubed colicroot
- Allium acuminatum — tapertip onion
- Allium amplectens — paper onion
- Allium burdickii — narrowleaf wild leek
- Allium canadense — meadow onion
- Allium cernuum — nodding onion
- Allium crenulatum — Olympic onion
- Allium geyeri — Geyer's onion
- Allium schoenoprasum — wild chives
- Allium stellatum — glade onion
- Allium textile — white wild onion
- Allium tricoccum — small white leek
- Allium validum — tall swamp onion
- Brodiaea coronaria — harvest firecracker-flower
- Calochortus apiculatus — Baker's mariposa lily
- Calochortus lyallii — Lyall's mariposa lily
- Calochortus macrocarpus — greenband mariposa lily
- Camassia leichtlinii — Leichtlin's camassia
- Camassia quamash — common camassia
- Camassia scilloides — wild hyacinth
- Chamaelirium luteum — Devil's-bit
- Clintonia borealis — blue bead-lily
- Clintonia uniflora — single-flowered clintonia
- Erythronium albidum — white trout-lily
- Erythronium americanum — yellow trout-lily
- Erythronium grandiflorum — largeflower yellow fawnlily
- Erythronium montanum — glacier fawnlily
- Erythronium oregonum — giant fawnlily
- Erythronium revolutum — pink fawnlily
- Fritillaria affinis — Ojai frittilary
- Fritillaria camschatcensis — Indian rice
- Fritillaria pudica — yellow mission-bells
- Hypoxis hirsuta — eastern yellow stargrass
- Lilium canadense — Canada lily
- Lilium columbianum — Columbian lily
- Lilium michiganense — Michigan lily
- Lilium philadelphicum — wood lily
- Lloydia serotina — common alpine-lily
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- Lophiola aurea — golden crest
- Maianthemum canadense — wild lily-of-the-valley
- Maianthemum dilatatum — false lily-of-the-valley
- Maianthemum racemosum — Solomon's-plume
- Maianthemum stellatum — starflowered Solomon's-plume
- Maianthemum trifolium — three-leaf Solomon's-plume
- Medeola virginiana — Indian cucumber-root
- Nothoscordum bivalve — crow-poison
- Polygonatum biflorum — common Solomon's-seal
- Polygonatum pubescens — downy Solomon's-seal
- Prosartes hookeri — Hooker's mandarin
- Prosartes lanuginosa — yellow mandarin
- Prosartes smithii — Smith's fairy-bells
- Prosartes trachycarpa — rough-fruited mandarin
- Stenanthium occidentale — western featherbells
- Streptopus amplexifolius — clasping twisted-stalk
- Streptopus lanceolatus — rosy twisted-stalk
- Streptopus streptopoides — small twisted-stalk
- Streptopus x oreopolus — hybrid twisted-stalk
- Tofieldia coccinea — northern false-asphodel
- Tofieldia pusilla — Scotch false-asphodel
- Triantha glutinosa — sticky bog-asphodel
- Triantha occidentalis — western false-asphodel
- Trillium cernuum — nodding trillium
- Trillium erectum — ill-scent trillium
- Trillium flexipes — nodding trillium
- Trillium grandiflorum — white trillium
- Trillium ovatum — western trillium
- Trillium undulatum — painted trillium
- Triteleia grandiflora — largeflower triteleia
- Triteleia hyacinthina — white triteleia
- Uvularia grandiflora — largeflower bellwort
- Uvularia perfoliata — perfoliate bellwort
- Uvularia sessilifolia — sessile-leaf bellwort
- Veratrum viride — American false hellebore
- Xerophyllum tenax — western turkeybeard
- Zigadenus elegans — white camas
- Zigadenus venenosus — meadow deathcamas
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