California Buttercup
ExplorePlants
California Buttercup
ranunculus californicus
The California Buttercup is a vibrant, sun-loving perennial herb native to the Pacific Coast of North America. Renowned for its brilliant yellow blooms, this resilient plant is one of the first wild flowers to carpet the hillsides and meadows in late winter and early spring, signaling the end of the cold season. Its cheerful presence is highly valued in native plant gardens and ecological restoration efforts across its native range.
Habitat: Typically found in moist grasslands, open oak woodlands, chaparral, and coastal sage scrub communities of California and Oregon.
Appearance
This plant typically grows between 15 to 70 centimeters tall on slender, upright stems. It features bright, glossy yellow flowers with 9 to 17 petals, which is significantly more than most other buttercup species. The petals have a highly reflective, almost varnished texture that gleams under direct sunlight. The leaves are deeply lobed, hairy, and arranged in a basal rosette, with smaller, simpler leaves appearing higher up the stems.
KingdomPlantaePhylumTracheophytaClassMagnoliopsidaOrderRanunculalesFamilyRanunculaceaeGenusRanunculus
Category
PlantsRarity
Common
Danger
1/5 · Very low
Snaps
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Interesting facts
Indigenous peoples, such as the Miwok, historically used the seeds of the California buttercup to make a traditional food called pinole.
The petals have a unique microscopic structure with a layer of starch that reflects light like a mirror, giving them an exceptionally glossy, varnished appearance.
The plant contains protoanemonin, a bitter toxin that protects it from being eaten by livestock and deer, though it loses its toxicity when dried.
Special abilities
Ability
Highly Reflective Petals
A microscopic starch layer within the petals reflects light like a mirror, enhancing visibility to early-season pollinators.
Ability
Chemical Defense
Produces protoanemonin, a bitter-tasting toxin that deters grazing by mammalian herbivores.
Ability
Heliotropic Blooms
The flowers slightly track the sun, warming their reproductive organs to increase pollen viability and attract insects.
Measurements & details
- Length
- 15-70 cm
- Lifespan
- 2-10 years
Diet & Feeding
This plant is an autotroph that generates its own energy from sunlight, carbon dioxide, and water through photosynthesis.
Primary Foods
- Sunlight
- Carbon dioxide
- Water
- Soil minerals
Ecological connections
mutualism
Western Honey Bee
Apis mellifera
Provides nectar and pollen, receiving pollination services in return.
mutualism
Yellow-faced Bumblebee
Bombus vosnesenskii
Feeds on the nectar and pollen of the buttercup, assisting with pollination.
eaten by
Botta's Pocket Gopher
Thomomys bottae
Feeds on the underground roots and corms of the plant.
Traits
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Also known as
No aliases listed yet.
Collections
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Safety
Danger
1/5 · Very low
No special safety notes yet.
Frequently Asked Questions
How to identify California Buttercup?
The easiest way to identify California Buttercup is to use the Snappit nature identifier app.
How long is California Buttercup?
15-70 cm
How long does California Buttercup live?
2-10 years
What does California Buttercup eat?
This plant is an autotroph that generates its own energy from sunlight, carbon dioxide, and water through photosynthesis.
Where is California Buttercup usually found?
Typically found in moist grasslands, open oak woodlands, chaparral, and coastal sage scrub communities of California and Oregon.
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