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Species Details
Listera borealis Morong
University of Alberta Vascular Plant Herbarium Read more about this collection »
LeavesEgg-shaped; 1-5 cm long (Moss, 1983). One pair; opposite; above middle of stem; stalkless (Johnson et al., 1995). 0.7-3 cm wide (E-Flora BC).
FlowersPale to yellow-green; veins of sepals and petals deep green; lance-shaped and 4-7 mm long; lip 2-4 times longer than wide, broadest at base; 7-12 mm long (Moss, 1983). 3-15 in cluster (Johnson et al., 1995).
Fruits and SeedsCapsules; oval; 5 mm long; many seeds (Johnson et al., 1995).
Scientific Name
Listera borealis Morong
Common Name
northern twayblade
General Description
A perennial 5-25 cm tall that grows from fleshy roots, has glandular hairs and bears pale to yellow-green flowers (Johnson et al., 1995).
Leaves
Egg-shaped; 1-5 cm long (Moss, 1983). One pair; opposite; above middle of stem; stalkless (Johnson et al., 1995). 0.7-3 cm wide (E-Flora BC).
Flowers
Pale to yellow-green; veins of sepals and petals deep green; lance-shaped and 4-7 mm long; lip 2-4 times longer than wide, broadest at base; 7-12 mm long (Moss, 1983). 3-15 in cluster (Johnson et al., 1995).
Fruits and Seeds
Capsules; oval; 5 mm long; many seeds (Johnson et al., 1995).
Phenology
June to August (JSTOR).
Notes
2n=56 (Moss, 1983). Also called Ophrys borealis (Moss, 1983). A nectary is in a furrow in the centre of the lower lip; bees, wasps or beetles lick the nectar and a drop of sticky fluid in the pollen bundle hardens…
2n=56 (Moss, 1983). Also called Ophrys borealis (Moss, 1983). A nectary is in a furrow in the centre of the lower lip; bees, wasps or beetles lick the nectar and a drop of sticky fluid in the pollen bundle hardens pollen in place on the insect's head (Johnson et al., 1995). Another common name is "big ears" due to the two leaves on the stem (Johnson et al., 1995).
Range/Distribution
Alberta: SW in mountain range to central (Canadensys). CAN (BC, MB, NL, SK, NT, NU, ON, PE, QC, YT); USA (WA, OR, ID, MT, WY, UT, CO, NM) (USDA).
Citation
Page Citation for Listera borealis Morong
Page Citation
"Species Details - Listera borealis Morong, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/1-3478/12-16491. Accessed 02 Jul. 2024.
Specimen Information
There are 54 specimens of this Species.
118750 - Listera borealis Morong
University of Alberta Vascular Plant Herbarium
Common Namenorthern twayblade
Place CollectedNorth America: Canada, Alberta, RB Miller Biological Station
Date Collected1967-07-06
119713 - Listera borealis Morong
University of Alberta Vascular Plant Herbarium
Common Namenorthern twayblade
Place CollectedNorth America: Canada, Alberta, Kootenay Plains Ecological Reserve, Siffleur Falls
Date Collected2008-06-26
119712 - Listera borealis Morong
University of Alberta Vascular Plant Herbarium
Common Namenorthern twayblade
Place CollectedNorth America: Canada, Alberta, Thompson Creek Provincial Recreation Area
Date Collected2008-06-25
121855 - Listera borealis Morong
University of Alberta Vascular Plant Herbarium
Common Namenorthern twayblade
Place CollectedNorth America: Canada, Alberta, Kootenay Plains Ecological Reserve
Date Collected2009-06-17
121856 - Listera borealis Morong
University of Alberta Vascular Plant Herbarium
Common Namenorthern twayblade
Place CollectedNorth America: Canada, Alberta, Kootenay Plains Ecological Reserve
Date Collected2009-07-22
121857 - Listera borealis Morong
University of Alberta Vascular Plant Herbarium
Common Namenorthern twayblade
Place CollectedNorth America: Canada, Alberta, Crescent Falls Provincial Recreation Area
Date Collected2009-08-12
121581 - Listera borealis Morong
University of Alberta Vascular Plant Herbarium
Common Namenorthern twayblade
Place CollectedNorth America: Canada, Alberta, Tucker Lake
Date Collected2008-06-28
130645 - Listera borealis Morong
University of Alberta Vascular Plant Herbarium
Common Namenorthern twayblade
Place CollectedNorth America: Canada, Alberta, Lakeland Provincial Recreation Area, Seibert Lake
Date Collected1981-05-28
130646 - Listera borealis Morong
University of Alberta Vascular Plant Herbarium
Common Namenorthern twayblade
Place CollectedNorth America: Canada, Alberta, Moose Mountain
Date Collected1980-06-25
130647 - Listera borealis Morong
University of Alberta Vascular Plant Herbarium
Common Namenorthern twayblade
Place CollectedNorth America: Canada, Alberta, Moose Mountain
Date Collected1980-06-24
136417 - Listera borealis Morong
University of Alberta Vascular Plant Herbarium
Common Namenorthern twayblade
Place CollectedNorth America: Canada, British Columbia, Yoho National Park, Emerald Lake
Date Collected1974-07-10
137270 - Listera borealis Morong
University of Alberta Vascular Plant Herbarium
Common Namenorthern twayblade
Place CollectedNorth America: Canada, Alberta, Rock Lake Provincial Park
Date Collected2015-07-23