Swamp Saxifrage

micranthes pensylvanica

Swamp Saxifrage, Micranthes pensylvanica, is a resilient herbaceous perennial belonging to the Saxifrage family. This fascinating plant thrives in challenging wetland environments across eastern North America, where it plays an important ecological role. Known for its ability to grow in saturated, often nutrient-poor, and sometimes acidic soils, it stands as a testament to adaptation. Its early spring bloom provides a vital nectar source for early emerging pollinators, signaling the awakening of the wetland ecosystem. Despite its somewhat unassuming appearance, the Swamp Saxifrage is a crucial component of its unique bog and fen habitats.

Habitat: Found predominantly in various wetland habitats, including bogs, fens, swamps, wet meadows, sedge hummocks, and along stream banks in cool, perpetually moist to saturated soils.

Appearance

This plant forms a basal rosette of large, oblong to spatulate leaves, typically 10-30 cm long, with irregular, wavy-toothed margins and often a slightly wrinkled texture; they are generally dark green. From the center of this rosette emerges a tall, leafless flower stalk, reaching 30-90 cm in height, which is usually glandular-hairy and purplish-green. The inflorescence is a narrow, elongated panicle composed of numerous small, greenish-white to yellowish-green flowers, each with five petals and ten stamens, giving the overall bloom a somewhat fuzzy or frothy appearance.

KingdomPlantaePhylumTracheophytaClassMagnoliopsidaOrderSaxifragalesFamilySaxifragaceaeGenusMicranthes

Swamp Saxifrage

Interesting facts

Its genus name "Micranthes" means "small flower," referring to its numerous, though individually tiny, blossoms.

Its hairy stems are often covered in sticky glandular hairs, which may deter small crawling insects or aid in water retention.

Swamp Saxifrage is an indicator species for certain types of high-quality wetlands, meaning its presence often indicates a healthy and undisturbed ecosystem.

The species name "pensylvanica" refers to Pennsylvania, one of the states where it was first documented or is prominently found.

Special abilities

It possesses specialized root systems that tolerate anaerobic (low oxygen) conditions common in saturated soils, allowing it to thrive where many other plants cannot.

As an early spring bloomer, it is well-adapted to cooler temperatures and can emerge and flower even when frost is still a threat, providing early resources for pollinators.

It propagates effectively through short, thick rhizomes, enabling it to form colonies and persist in its specific wetland niches, even if individual plants are disturbed.

Measurements & details

Length: 30-90 cm
Weight: 0.05-0.2 kg
Lifespan: 3-10 years
Clutch Size: 100-5000

Diet & Feeding

Swamp Saxifrage produces its own food through photosynthesis, converting sunlight into energy. It absorbs essential nutrients and water from the saturated, organic-rich soils of its wetland habitat.

Primary Foods

Sunlight
Water
Nitrogen
Phosphorus
Potassium

Foraging Method

Foraging (nutrient Absorption)

Ecological connections

pollinated by

Small Flies

various Brachycera

Pollination

pollinated by

Early Spring Bees

various Apidae/Halictidae

Pollination

eaten by

White-tailed Deer

Odocoileus virginianus

Herbivory

habitat associate

Sphagnum Moss

Sphagnum spp.

Habitat interaction

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 Swamp Saxifrage?

The easiest way to identify Swamp Saxifrage is to use the Snappit nature identifier app.

How long is Swamp Saxifrage?

30-90 cm

How much does Swamp Saxifrage weigh?

0.05-0.2 kg

How long does Swamp Saxifrage live?

3-10 years

What does Swamp Saxifrage eat?

Swamp Saxifrage produces its own food through photosynthesis, converting sunlight into energy. It absorbs essential nutrients and water from the saturated, organic-rich soils of its wetland habitat.

Where is Swamp Saxifrage usually found?

Found predominantly in various wetland habitats, including bogs, fens, swamps, wet meadows, sedge hummocks, and along stream banks in cool, perpetually moist to saturated soils.

How does Swamp Saxifrage hunt?

Foraging (nutrient Absorption)

How many eggs does Swamp Saxifrage lay?

100-5000