Yellow Lady'S Slipper

cypripedium parviflorum

The Yellow Lady's Slipper (Cypripedium parviflorum) is one of North America's most enchanting and recognizable wild orchids. Nestled in moist, dappled woodlands and fens, this perennial herb captivates hikers and botanists alike with its distinctive, pouch-like yellow flower that resembles a delicate slipper. It belongs to a primitive lineage of orchids and plays a fascinating role in its local ecosystems, relying on a complex web of interactions with soil fungi to survive and grow. Because of its beauty, the Yellow Lady's Slipper has historically faced pressure from wildflower collectors, making wild encounters with this resilient yet sensitive plant a highly prized experience. Observing one in its natural, untamed habitat is a true testament to the health and biodiversity of the surrounding wetland or forest.

Habitat: Typically found in moist, deciduous or coniferous forests, fens, bogs, and calcareous swamps where the soil is rich, damp, and alkaline.

Appearance

This striking orchid stands 15 to 80 cm tall, featuring alternate, deeply ribbed, bright green oval leaves that clasp the stem. Its most defining feature is the pouch-like golden-yellow lower petal (lip) measuring 2 to 5 cm long, which is flanked by spirally twisted, greenish-yellow to purplish-brown sepals and lateral petals. Small reddish-brown spots or streaks often decorate the interior of the yellow slipper, serving as guides for insect pollinators.

KingdomPlantaePhylumTracheophytaClassLiliopsidaOrderAsparagalesFamilyOrchidaceaeGenusCypripedium

Yellow Lady'S Slipper

Interesting facts

It can take up to ten to twelve years of growth from a germinated seed before a Yellow Lady's Slipper plant produces its very first flower in the wild.

The seeds of the Yellow Lady's Slipper are so microscopic that they resemble fine dust, allowing them to easily travel on wind currents.

This orchid performs a 'scent trick' by emitting a fragrance that mimics the pheromones of specific bees, luring them into its trap without providing any sweet nectar.

Special abilities

The flower uses its pouch-like petal to temporarily trap insects, forcing them to crawl out of a specific exit path where they inevitably pick up or deposit pollen.

Its dust-like seeds lack a food reserve, relying entirely on a symbiotic relationship with mycorrhizal soil fungi to trigger germination and supply nutrients.

The stems and leaves are covered in fine, glandular hairs that secrete a substance capable of causing mild skin irritation in herbivores and humans, deterring foragers.

Measurements & details

Length: 15+ cm

Diet & Feeding

As a photosynthetic plant, it generates its own energy from sunlight, water, and carbon dioxide, while supplementing mineral intake through mycorrhizal fungi.

Age differences: As a seedling, it is non-photosynthetic and entirely heterotrophic, relying fully on mycorrhizal fungi for nutrients. Once mature, it develops leaves and becomes primarily photoautotrophic.

Primary Foods

Sunlight
Water
Carbon Dioxide
Soil Minerals

Ecological connections

mutualism

Orchid mycorrhiza fungus

Tulasnella calospora

Forms a crucial mutualistic relationship with soil fungi, which sustain the orchid's seeds and root system with water and minerals.

mutualism

Miner bee

Andrena carlini

Bees enter the slippery pouch seeking nectar, and while trying to escape, they get coated in sticky pollen, facilitating cross-pollination.

Traits

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Also known as

No aliases listed yet.

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Safety

Danger

1/5 · Very low

No special safety notes yet.

Frequently Asked Questions

How to identify Yellow Lady'S Slipper?

The easiest way to identify Yellow Lady'S Slipper is to use the Snappit nature identifier app.

How long is Yellow Lady'S Slipper?

15+ cm

What does Yellow Lady'S Slipper eat?

As a photosynthetic plant, it generates its own energy from sunlight, water, and carbon dioxide, while supplementing mineral intake through mycorrhizal fungi.

Where is Yellow Lady'S Slipper usually found?

Typically found in moist, deciduous or coniferous forests, fens, bogs, and calcareous swamps where the soil is rich, damp, and alkaline.