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Species Details
Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium Read more about this collection »
LeavesLance-shaped; 4-12 cm long and 1-6 cm wide; heart-shaped at base and clasping; bluish-green beneath; margin entire or toothed (Moss, 1983). No basal leaves (E-Flora BC).
FlowersAxillary; solitary or in pairs; stalks jointed; tepals whitish-green; 8-12 mm long; tip bent backwards from cup-shaped base; ; lance-shaped; stamens short filaments; ovary 3-4 mm long; stigma slightly 3-lobed (Moss, 1983).
Fruits and SeedsRed berry; round; 1-1.5 cm wide; inedible; several seeds (Moss, 1983).
Scientific Name
Streptopus amplexifolius (L.) DC.
Common Name
twisted stalk
General Description
A perennial herb that develops from a thick rhizome; the stalk is 30-100 cm high; hairy below the first branches, can be branched or unbranched and bears greenish-white flowers (Moss, 1983).
Leaves
Lance-shaped; 4-12 cm long and 1-6 cm wide; heart-shaped at base and clasping; bluish-green beneath; margin entire or toothed (Moss, 1983). No basal leaves (E-Flora BC).
Flowers
Axillary; solitary or in pairs; stalks jointed; tepals whitish-green; 8-12 mm long; tip bent backwards from cup-shaped base; ; lance-shaped; stamens short filaments; ovary 3-4 mm long; stigma slightly 3-lobed (Moss, 1983).
Fruits and Seeds
Red berry; round; 1-1.5 cm wide; inedible; several seeds (Moss, 1983).
Phenology
March to August (JSTOR).
Notes
2n=16, 32 (Moss, 1983) Three varieties are known in this region: Streptopus amplexifolius var. americanus, Streptopus amplexifolius var. denticulatus, Streptopus amplexifolius var. chalazatus (Moss, 1983).
2n=16, 32 (Moss, 1983) Three varieties are known in this region: Streptopus amplexifolius var. americanus, Streptopus amplexifolius var. denticulatus, Streptopus amplexifolius var. chalazatus (Moss, 1983).
Range/Distribution
Alberta: SW along mountains and central (Canadensys). CAN (BC, SK, MB, ON, QC, NL, NS, NB, PE, YT, NT); USA (AK, WA, CA, OR, ID, MT, WY, UT, CO, AZ, NM, SD, MN, WI, MI, TN, NC, VA, MD, PA, NJ, NY, CT, MA, VT, ME, NH) (USDA).
Citation
Page Citation for Streptopus amplexifolius (L.) DC.
Page Citation
"Species Details - Streptopus amplexifolius (L.) DC., University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/1-3921/12-4952. Accessed 30 Jun. 2024.
Specimen Information
There are 68 specimens of this Species.
96212 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Deadhorse Creek
Date Collected1961-06-13
96116 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Goose Mountain Lookout Tower
Date Collected1983-06-19
45201 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Fickle Lake
Date Collected1972-09-03
45668 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Waterton Lakes National Park, Red Rock Canyon
Date Collected1970-07-08
45667 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Waterton Lakes National Park, Cameron Lake
Date Collected1970-07-14
27777 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Alder Flats
Date Collected1968-08-26
100118 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Jasper National Park, Pocahontas
Date Collected1960-07-13
5064 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Mercoal
Date Collected1956-06-21
36873 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Banff National Park, Mount Edith
Date Collected1899-06-30
5058 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Chickakoo Lake
Date Collected1962-08-30
24252 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Cochrane
Date Collected1952-09-01
100666 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: United States, Alaska, Chugach State Park, Little Teton Mountain
Date Collected1983-06-20
88212 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: United States, Alaska, Haines borough
Date Collected1981-06-10
88316 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Northwest Territories, Tungsten
Date Collected1981-08-13
36878 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, British Columbia, Kootenay Lake
Date Collected1947-05-22
26597 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, British Columbia, Prince Rupert
Date Collected1933-08-02
75851 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Fox Creek
Date Collected1974-07-16
49439 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Quebec, Saint-Adolphe-d'Howard
Date Collected1943-08-08
101009 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, British Columbia, Banks Island, Kelp Point
Date Collected1983-07-23
36879 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, British Columbia, Yoho National Park, Emerald Lake
Date Collected1934-06-07
36877 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, British Columbia, Gray Creek
Date Collected1944-06-10