Bloomipedia
Baker's mariposa lily (Calochortus apiculatus)
Photo: William Harmon via iNaturalist · CC BY 4.0 · resized

Flower profile

Baker's mariposa lily

Calochortus apiculatus

Native to Montana

Baker's mariposa lily is a wildflower that USDA PLANTS lists as native in the lower 48 states. In Montana it's most often seen in bloom in June–July.

3states
1,236MT sightings*
1,563U.S. sightings*

*iNaturalist research-grade observations, as of October 17, 2026.

On our lists for: Montana

Quick look

Calochortus apiculatus is a North American species of flowering plants in the lily family.

  • It belongs to the Liliaceae family. iNaturalist
  • USDA PLANTS describes it as an herb (forb) with a perennial life cycle. USDA PLANTS
  • USDA PLANTS lists it as native in the lower 48 states and records it in 3 states. USDA PLANTS
  • NatureServe lists it as native to Montana. NatureServe
  • In Montana, most iNaturalist sightings of it in flower come in June–July. iNaturalist
  • iNaturalist has 1,236 research-grade sightings of it in Montana, ranking #19 among the 109 flowers on our Montana list. iNaturalist

Baker's mariposa lily gift ideas

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When does it bloom?

In Montana, most flowering sightings come in June–July.

Flowering records by month in Montana (iNaturalist research-grade observations marked “Flowering”) (614 records)

Conservation status

Federal (U.S. ESA)
Not listed No U.S. Endangered Species Act listing in the USFWS ECOS database. USFWS ECOS
NatureServe global
G4 Apparently secure worldwide. NatureServe
Montana
No list Montana has no state law listing endangered or threatened plants, so we show NatureServe's Montana ranks instead. NatureServe: S3, vulnerable in Montana.
Rare elsewhere
Other states where NatureServe ranks it rare or missing: WY (S1). (S1 critically imperiled, S2 imperiled, SH possibly extirpated, SX presumed extirpated.)

Checked October 17, 2026. Rankings and lists can change, so follow the links for the latest.

Please leave it where it grows

Please don't pick or dig this flower: NatureServe ranks it S3 in Montana. NatureServe

Can you eat it?

For peopleNot well documented

None of the sources we checked (NC State Extension (no page for this plant), USDA PLANTS) say whether it's edible or poisonous for people.

For petsNon-toxic to dogs, cats and horses

ASPCA's entry “Calochortus nuttalli” (Calochortus spp), which covers the whole genus, lists it as non-toxic to dogs, cats and horses. Eating lots of any plant can still upset a pet's stomach. ASPCA

🌿 Never eat a wild plant unless you're certain of its ID; this isn't medical advice. Worried about a person? Call Poison Control at 1-800-222-1222. Worried about a pet? Call your vet.

Where does it grow?

USDA PLANTS records baker's mariposa lily in 3 states.

recorded by USDA PLANTS on our state lists not recorded

See the full list of states

Idaho, Montana, Washington.

More Montana flowers

Glacier lily (Erythronium grandiflorum)

Glacier lily

Erythronium grandiflorum

Native

🌼 Blooms in MT: April–July
Bride's bonnet (Clintonia uniflora)

Bride's bonnet

Clintonia uniflora

Native

🌼 Blooms in MT: June–July
Yellow fritillary (Fritillaria pudica)

Yellow fritillary

Fritillaria pudica

Native

🌼 Blooms in MT: April–May

Sources