# 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. - **Category:** [Plants](https://www.snappit.app/explore/categories/plant) - **Rarity:** Common - **Danger:** 1/5 · Very low - **Snaps:** 15 - **Habitat:** Typically found in moist, deciduous or coniferous forests, fens, bogs, and calcareous swamps where the soil is rich, damp, and alkaline. ![Yellow Lady's Slipper](https://inaturalist-open-data.s3.amazonaws.com/photos/71452640/medium.jpeg) Photo: gsexauer, CC0 · [iNaturalist](https://www.inaturalist.org/photos/71452640) ## 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. ## Taxonomy - **Kingdom:** Plantae - **Phylum:** Tracheophyta - **Class:** Liliopsida - **Order:** Asparagales - **Family:** Orchidaceae - **Genus:** Cypripedium ## 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 - **Deceptive Pollination Trap:** 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. - **Fungal Dependency:** Its dust-like seeds lack a food reserve, relying entirely on a symbiotic relationship with mycorrhizal soil fungi to trigger germination and supply nutrients. - **Chemical Defense:** 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. ## Safety **Danger:** 1/5 · Very low No special safety notes yet. ## Frequently Asked Questions ### How to identify Yellow Lady's Slipper? Start with the whole plant, then compare leaf arrangement, leaf edges, stems and any flowers or fruit. Opposite leaves grow in pairs; alternate leaves come one at a time along the stem. These details tell you far more together than a single green leaf does. Plant Identifier: upload a photo and compare the visible details. ### 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. ## Where to spot - [Devil's Kitchen](https://www.snappit.app/guides/places/devils-kitchen) — Michigan, US · Nature Reserve - [Hungry Mother State Park](https://www.snappit.app/guides/places/hungry-mother-state-park) — Virginia, US · State Park - [Minnesota Landscape Arboretum](https://www.snappit.app/guides/places/minnesota-landscape-arboretum) — Minnesota, US · Botanical Garden - [Fort Mackinac](https://www.snappit.app/guides/places/fort-mackinac) — Michigan, US · Historic Site - [G. Richard Thompson Wildlife Management Area](https://www.snappit.app/guides/places/g-richard-thompson-wildlife-management-area) — Virginia, US · Nature Reserve - [Skull Cave](https://www.snappit.app/guides/places/skull-cave) — Michigan, US · Nature Reserve [View all places to see Yellow Lady's Slipper](https://www.snappit.app/guides/where-to-see/yellow-ladys-slipper) ## More Plants - [white snakeroot](https://www.snappit.app/explore/white-snakeroot) (*Ageratina altissima*) - [tree-of-heaven](https://www.snappit.app/explore/tree-of-heaven) (*Ailanthus altissima*) - [western sword fern](https://www.snappit.app/explore/western-sword-fern) (*Polystichum munitum*) - [common milkweed](https://www.snappit.app/explore/common-milkweed) (*Asclepias syriaca*) --- Source: [Yellow Lady's Slipper: Facts & Places to See — Snappit](https://www.snappit.app/explore/yellow-ladys-slipper)