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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/1-3921/12-5055. Accessed 02 Jul. 2024.
Specimen Information
There are 68 specimens of this Species.
36876 - 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 Collected1931-08-24
36875 - 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 Collected1931-06-23
36874 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, British Columbia, Botanie Indian Reservation
Date Collected1922-07-07
36880 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: United States, Wyoming, Grand Teton National Park, Jenny Lake
Date Collected1938-06-26
5067 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: United States, Colorado, Boulder County, Ward
Date Collected19??-08-29
5068 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: United States, Washington, Kittitas County, Bald Mountain
Date Collected1940-06-22
36882 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: United States, Washington, Grays Harbor County, Lake Quinault
Date Collected1939-05-17
104447 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Swan Dive Tower
Date Collected1968-08-07
28868 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Fairfax Lake
Date Collected1968-07-05
109651 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, RB Miller Biological Station
Date Collected1967-07-13
109965 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Saskatoon Mountain Natural Area
Date Collected1982-08-11
104375 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Fox Creek
Date Collected1984-06-21
115639 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Willmore Wilderness Park, Cote Creek
Date Collected1976-08-04
119895 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Robb
Date Collected1965-08-08
121400 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Coyote Lake Nature Sanctuary
Date Collected2009-08-04
125679 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Straessle
Date Collected2007-08-15
5049 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Jasper National Park, Jasper
Date Collected1939-06-12
88186 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: United States, Alaska, Matanuska-Susitna, Palmer
Date Collected1981-06-18
134691 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, British Columbia, Vancouver Island, Cameron Lake
Date Collected1973-08-15
136273 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, Alberta, Beaver Mines Lake
Date Collected2013-06-23
136434 - Streptopus amplexifolius (L.) DC.
University of Alberta Vascular Plant Herbarium
Common Nametwisted stalk
Place CollectedNorth America: Canada, British Columbia, Yoho National Park, Yoho Valley
Date Collected1974-07-01