
Stream Orchid
epipactis gigantea
The Stream Orchid, also known as the giant helleborine, is an elegant and robust wild orchid native to western North America. It stands out in the plant kingdom due to its preference for damp, riparian environments, often gracing the edges of rushing mountain streams, bubbling springs, and wet meadows. Unlike many of its tropical, tree-dwelling relatives, this orchid is terrestrial, anchoring its roots deep into the wet soils and gravel banks of temperate zones.
Hábitat: Found in wet habitats such as stream banks, springs, seeps, wet meadows, and moist canyon walls, often growing in sandy or gravelly soil.
Aspecto
This species is a tall, leafy perennial growing between 30 to 100 cm in height, featuring lance-shaped, parallel-veined bright green leaves that clasp the sturdy stem. Its flowers, measuring 2 to 3 cm across, hang like delicate lanterns in loose clusters. Each flower boasts a complex color scheme of greenish-yellow sepals and petals heavily veined with reddish-brown, contrasting with a distinct pouch-like, three-lobed lower lip marked with pinkish-purple stripes and a yellow center.

Categoría
PlantasRareza
Common
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Datos interesantes
It is one of the few orchid species native to the western United States that can successfully grow directly in active, wet gravel bars.
Its species name 'gigantea' refers to the plant's tall, robust growth form compared to other members of the helleborine genus.
The orchid's nectar is known to contain natural chemical compounds that have a mildly narcotic effect on wasps, making them sluggish and improving pollination success.
Habilidades especiales
Rhizomatous Soil Binding
Utilizes a tough, creeping network of underground rhizomes to anchor itself firmly into unstable, waterlogged stream banks, preventing erosion.
Chemical Wasp Lure
Produces a specialized sweet nectar containing chemical compounds that mimic aphid alarm pheromones, successfully attracting predatory wasps for pollination.
Mycorrhizal Dependency
Forms vital subterranean partnerships with specialized soil fungi to assist its microscopic seeds in germinating and obtaining early nutrients.
Medidas y detalles
- Longitud
- 30-100 cm
- Esperanza de vida
- 5-20 años
Dieta y alimentación
The Stream Orchid is a photosynthesizing plant that produces its own sugars from sunlight, water, and carbon dioxide, while absorbing minerals through its roots.
Diferencias por edad: Seedlings rely entirely on nutrients supplied by mycorrhizal fungi before developing green leaves to perform photosynthesis.
Alimentos principales
- Sunlight
- Water
- Carbon Dioxide
- Nitrogen
- Phosphorus
- Potassium
Método de búsqueda
- Photosynthesis
Conexiones ecológicas
Common Western Hoverfly
Syrphus opinator
Provides energy-rich nectar to adult hoverflies, which in turn transfer pollen packets between flowers.
Tulasnella Fungus
Tulasnella calospora
Assists the orchid seeds in germination and provides nutrients to the root system.
Mule Deer
Odocoileus hemionus
Occasionally grazes on the lush green leaves and juicy stems of the plant in riparian valleys.
Rasgos
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También conocido como
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Seguridad
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Preguntas frecuentes
¿Cómo identificar a Stream Orchid?
La forma más fácil de identificar a Stream Orchid es usar la aplicación de identificación de naturaleza Snappit.
¿Cuál es el longitud de Stream Orchid?
30-100 cm
¿Cuál es el esperanza de vida de Stream Orchid?
5-20 años
¿Qué come Stream Orchid?
The Stream Orchid is a photosynthesizing plant that produces its own sugars from sunlight, water, and carbon dioxide, while absorbing minerals through its roots.
¿Dónde se encuentra normalmente Stream Orchid?
Found in wet habitats such as stream banks, springs, seeps, wet meadows, and moist canyon walls, often growing in sandy or gravelly soil.
¿Cómo caza Stream Orchid?
Photosynthesis
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