logo Calflora, a 501c3 non-profit
Taxon  Report  
Streptopus amplexifolius  (L.) DC.  var. americanus  Schult. & Schult. f.
American streptopus,   Schultestwisted stalk,   Twisted stalk
Streptopus amplexifolius var. americanus 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
bloom graphic
Bloom Period
Parent: Streptopus amplexifolius
Genus: Streptopus
Family: Liliaceae  
Category: angiosperm  
PLANTS group:Monocot
Jepson eFlora section: monocot

Wetlands: Equally likely to occur in wetlands and non wetlands

Communities: Redwood Forest, Douglas-Fir Forest, Yellow Pine Forest, wetland-riparian

Name Status:
Accepted by JEF
Alternate Names:
JEFStreptopus amplexifolius var. denticulatus
PLANTSStreptopus amplexifolius var. amplexifolius
Information about  Streptopus amplexifolius var. americanus from other sources
Nursery availability from CNPLX
Commercial availability unknown.
Jepson eFlora

USDA PLANTS Profile (STAMA2)

Photos on Calflora

Photos on CalPhotos

Google Images

Photos on iNaturalist

ID Tips on PlantID.net


Suggested Citation
Calflora: Information on California plants for education, research and conservation, with data contributed by public and private institutions and individuals. [web application]. 2023. Berkeley, California: The Calflora Database [a non-profit organization]. Available: https://www.calflora.org/   (Accessed: 05/31/2023).