
Pacific Waterleaf
hydrophyllum tenuipes
Pacific Waterleaf (Hydrophyllum tenuipes) is a lush, shade-loving perennial herb native to the moist, deciduous forests of the Pacific Northwest. Characterized by its large, deeply lobed leaves and delicate clusters of bell-shaped flowers, this plant serves as a vital component of the forest understory. It thrives in rich, damp soils, often spreading via underground rhizomes to form extensive, vibrant green carpets that stabilize the forest floor and provide shelter for various microfauna. During spring and early summer, its distinctive flowers emerge with prominent, thread-like stamens that give the blooms a fuzzy appearance. Historically used by Indigenous peoples as a food source, the tender young shoots and roots were cooked and consumed.
Habitat: Found in moist, shaded forests, damp woodlands, and riparian zones, typically in nutrient-rich soils at low to middle elevations.
Appearance
This species features large, alternate leaves that are deeply divided into 7 to 9 sharply-toothed, palmately lobed segments with a rough, hairy texture. The plant grows to heights between 20 and 80 cm, forming dense mounds of soft foliage. Its flowers are clustered in coiled, cyme-like inflorescences and are usually greenish-white, lavender, or cream-colored. Each bell-shaped flower is about 5 to 7 mm long, notably characterized by long, protruding stamens that extend far past the petals, creating a delicate, whiskered look.

Category
PlantsRarity
Common
Danger
1/5 · Very low
Snaps
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Interesting facts
Indigenous peoples of the Pacific Northwest historically cooked the sweet, fleshy roots of this plant as a nutritious food source.
Its fuzzy-looking flowers are highly attractive to native long-tongued bees, making it an excellent addition to shade-friendly pollinator gardens.
The genus name 'Hydrophyllum' translates directly to 'water-leaf,' describing the watery appearance or saturated sap found in the leaves.
Special abilities
Rhizomatous Colonization
Utilizes creeping underground rhizomes to rapidly colonize forest understories and secure soil on sloped terrain.
Exserted Stamens
Features exceptionally long stamens that brush pollen onto visiting bumblebees and flies with maximum efficiency.
Moisture Adaptation
Thrives in heavily water-saturated soils, utilizing specialized root structures to resist anaerobic stress.
Measurements & details
- Length
- 20+ cm
- Lifespan
- 3+ years
Diet & Feeding
As a photosynthetic plant, Pacific Waterleaf produces its own organic nutrients using sunlight, water, carbon dioxide, and essential soil minerals.
Primary Foods
- Sunlight
- Water
- Carbon Dioxide
- Soil Nutrients
Ecological connections

Yellow-faced Bumble Bee
Bombus vosnesenskii
Visits the flowers for nectar and pollen, acting as a primary pollinator.

Mule Deer
Odocoileus hemionus
Forages on the tender spring foliage during early growth phases.
Pacific Banana Slug
Ariolimax columbianus
Consumes the low-lying, moist leaves in shaded understory habitats.
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 Pacific Waterleaf?
The easiest way to identify Pacific Waterleaf is to use the Snappit nature identifier app.
How long is Pacific Waterleaf?
20+ cm
How long does Pacific Waterleaf live?
3+ years
What does Pacific Waterleaf eat?
As a photosynthetic plant, Pacific Waterleaf produces its own organic nutrients using sunlight, water, carbon dioxide, and essential soil minerals.
Where is Pacific Waterleaf usually found?
Found in moist, shaded forests, damp woodlands, and riparian zones, typically in nutrient-rich soils at low to middle elevations.
Snap Map
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Where to spot

Washington, US
Glines Canyon Dam
You might spot Broad-Leaved Stonecrop and Western Sword Fern.
View guide →
Oregon, US
Leach Botanical Garden
You might spot Green Alkanet, Western Sword Fern, and Pacific Banana Slug.
View guide →
Oregon, US
Peavy Arboretum
You might spot Pacific Trillium, Giant White Fawn Lily, and Candy Flower.
View guide →









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