Woolly Meadowfoam
ExplorePlants
Woolly Meadowfoam
limnanthes pumila
The Woolly Meadowfoam (Limnanthes pumila) is a delicate, low-growing annual wildflower endemic to the unique, seasonally wet vernal pools and volcanic tablelands of Southern Oregon. This fascinating plant has evolved to thrive in an extreme, boom-or-bust ecosystem where soils are completely submerged during winter rains and baked bone-dry by the summer sun. Its survival hinges on a rapid spring lifecycle, transforming muddy pools into beautiful rings of white blooms before disappearing into dormancy as a seed.
Habitat: Typically found in the ephemeral vernal pools and wet depressions of volcanic mounded prairies and tablelands.
Appearance
This tiny herb rarely exceeds 10 centimeters in height. It is easily identified by its cup-shaped white flowers, which feature five petals with yellow bases, creating a delicate glowing center. True to its name, the calyx (the outer green sepals supporting the petals) is densely covered in fine, woolly white hairs. The leaves are deeply lobed and succulent, arranged in a low basal rosette that hugs the muddy ground.
KingdomPlantaePhylumTracheophytaClassMagnoliopsidaOrderBrassicalesFamilyLimnanthaceaeGenusLimnanthes
Category
PlantsRarity
Common
Danger
1/5 · Very low
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Interesting facts
It is a strict endemic, meaning it is found naturally in only one small region on Earth—specifically around the Table Rocks of Southern Oregon.
Its seeds possess a durable dormancy mechanism that allows them to survive the baking summer heat of dry clay basins.
The dense 'woolly' hairs on its sepals help protect the developing flower buds from late-season frosts and retain moisture.
Special abilities
Ability
Vernal Pool Adaptation
It successfully completes its entire life cycle within a short window, germinating underwater and flowering just as the pool dries.
Ability
Woolly Insulation
The dense hairs on its sepals insulate the developing flower buds from frost during cold spring mornings and reduce water loss.
Ability
Drought Resistant Seeds
Its seeds enter a deep summer dormancy, allowing them to survive baking clay temperatures exceeding 40 degrees Celsius.
Measurements & details
- Length
- 2-10 cm
- Weight
- 0.001-0.01 kg
- Lifespan
- 1 years
Diet & Feeding
As a photoautotrophic plant, it produces its own energy through photosynthesis, utilizing sunlight, carbon dioxide, and water while absorbing mineral nutrients from the shallow vernal pool soils.
Primary Foods
- Sunlight
- Water
- Carbon dioxide
- Soil nutrients
Ecological connections
mutualism
Meadowfoam Bee
Andrena limnanthis
Specialist solitary bees visit the flowers for nectar and pollen, acting as primary pollinators.
competitor
Medusahead Wildrye
Taeniatherum caput-medusae
Invasive annual grasses compete heavily for space, water, and nutrients in its fragile vernal pool habitat.
Traits
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Also known as
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Safety
Danger
1/5 · Very low
No special safety notes yet.
Frequently Asked Questions
How to identify Woolly Meadowfoam?
The easiest way to identify Woolly Meadowfoam is to use the Snappit nature identifier app.
How long is Woolly Meadowfoam?
2-10 cm
How much does Woolly Meadowfoam weigh?
0.001-0.01 kg
How long does Woolly Meadowfoam live?
1 years
What does Woolly Meadowfoam eat?
As a photoautotrophic plant, it produces its own energy through photosynthesis, utilizing sunlight, carbon dioxide, and water while absorbing mineral nutrients from the shallow vernal pool soils.
Where is Woolly Meadowfoam usually found?
Typically found in the ephemeral vernal pools and wet depressions of volcanic mounded prairies and tablelands.
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