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Epipactis gigantea  Douglas
Giant helleborine,   Chatterbox orchid,   Stream orchid,   Stream orchis
© 2024 Mary Ann Machi
© 2018 Anna Sereno
© 2020 Ron Vanderhoff
© 2019 Ron Vanderhoff
© 2019 Ron Vanderhoff
© 2019 Bob Sweatt
© 2021 Bryant Baker
© 2019 Bryant Baker
© 2018 Hunter Breck
© 2021 Donald Burk
© 2018 Ron Vanderhoff
© 2017 Alison Sheehey
© 2024 Mike Russler
© 2024 Mike Russler
© 2024 Mike Russler
© 2024 Mike Russler
© 2024 Mike Russler
© 2019 Bryant Baker
© 2019 Marisa Persaud
© 2019 Amber Manfree
© 2016 Barry Rice
© 2024 Mike Russler
© 2019 Bryant Baker
© 2018 Saskia Raether
© 2018 Margarita Orlova
© 2020 Ron Vanderhoff
© 2020 Ron Vanderhoff
© 2020 Ron Vanderhoff
© 2019 Bob Sweatt
© 2021 R.A. Chasey
© 2021 Bryant Baker
© 2021 Amber Bedgood
© 2022 Robert Oreglia
© 2022 Bryant Baker
© 2022 Bryant Baker
© 2022 Bryant Baker
© 2022 Bryant Baker
© 2018 Brian Charles
© 2019 Doug Zimmerman
© 2024 richard mcneill
Epipactis gigantea is a perennial herb that is native to California, and also found elsewhere in North America and beyond.
Siskiyou Del Norte Modoc Humboldt Shasta Lassen Trinity Plumas Tehama Butte Mendocino Glenn Sierra Yuba Lake Nevada Colusa Placer Sutter El Dorado Yolo Alpine Napa Sonoma Sacramento Mono Amador Solano Calaveras Tuolumne San Joaquin Marin Contra Costa Alameda Santa Cruz Mariposa Madera San Francisco San Mateo Merced Fresno Stanislaus Santa Clara Inyo San Benito Tulare Kings Monterey San Bernardino San Luis Obispo Kern Santa Barbara Ventura Los Angeles Riverside Orange San Diego Imperial
DJJJASONAFMM

Bloom Period
Genus: Epipactis
Family: Orchidaceae  
Category: angiosperm  
PLANTS group:Monocot
Jepson eFlora section: monocot

Wetlands: Occurs in wetlands

Habitat: streambanks

Communities: Yellow Pine Forest, Red Fir Forest, Lodgepole Forest, Subalpine Forest, Foothill Woodland, Chaparral, Valley Grassland, wetland-riparian, many plant communities

Name Status:
Accepted by JEF + PLANTS + POWO

Alternate Names:
JEFEpipactis gigantea f. rubrifolia
Information about  Epipactis gigantea from other sources
Nursery availability from CNPLX
This plant is available commercially.
Jepson eFlora

USDA PLANTS Profile (EPGI)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net

[Wikipedia] Cultivation, Cultivar: Epipactis gigantea is cultivated in the specialty horticulture trade and available as a non-wild collected propagated ornamental plant. A maroon-leaved (forma rubrifolia) cultivar is also grown, called 'Serpentine Night'. (link added by Mary Ann Machi)

[texashillcountry.com] Chatterbox Name Origin: Wondering where the name Chatterbox comes from? The moniker’s origin is revealed when the plant is touched or jostled, as the lower lip and tongue move like a wagging tongue! (link added by Mary Ann Machi)


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2025. The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 04/03/2025).