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Species Details
Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium Read more about this collection »
LeavesEgg-shaped; drooping; middle and upper leaves sessile; clasping; margin entire or toothed (Moss, 1983). 1.5-7 cm long; fall off quickly (Johnson et al., 1995). Hairless; ear-shaped at base (E-Flora BC).
FlowersUnbranched elongated inflorescence; mature bottom upwards (raceme); small, white flowers; petals 3-4 mm long (Moss, 1983). Stalks 3-15 mm long (Johnson et al., 1995).
Fruits and SeedsDry dehiscent pods (silicles); flat; rounded; 1-2 cm long; winged; notched at apex; 2-8 seeds per locule; black with concentric ridges (Moss, 1983). Pods heart-shaped (Johnson et al., 1995).
Scientific Name
Thlaspi arvense L.
Common Name
pennycress, stinkweed (Moss, 1983).
General Description
A hairless, yellow-green annual herb that grows from a taproot to a height of 20-50 cm tall to bear white flowers (Johnson et al., 1995); turns yellow after flowering (Moss, 1985).
Leaves
Egg-shaped; drooping; middle and upper leaves sessile; clasping; margin entire or toothed (Moss, 1983). 1.5-7 cm long; fall off quickly (Johnson et al., 1995). Hairless; ear-shaped at base (E-Flora BC).
Flowers
Unbranched elongated inflorescence; mature bottom upwards (raceme); small, white flowers; petals 3-4 mm long (Moss, 1983). Stalks 3-15 mm long (Johnson et al., 1995).
Fruits and Seeds
Dry dehiscent pods (silicles); flat; rounded; 1-2 cm long; winged; notched at apex; 2-8 seeds per locule; black with concentric ridges (Moss, 1983). Pods heart-shaped (Johnson et al., 1995).
Phenology
March to August (JSTOR).
Notes
2n=14* (Moss, 1983). This species was introduced to North America by Europeans (Johnson et al., 1995). Seeds contain mustard oil (isothiocyanate); cattle have been poisoned by eating contaminated hay; dairy products…
2n=14* (Moss, 1983). This species was introduced to North America by Europeans (Johnson et al., 1995). Seeds contain mustard oil (isothiocyanate); cattle have been poisoned by eating contaminated hay; dairy products and meat can be tainted if cattle consume it (Johnson et al., 1995). Seeds have been used for flavouring but this is not wise; young leaves have been used in salads; leaves have a rank odour if crushed (Johnson et al., 1995).
Range/Distribution
Alberta: Predominantly in the southern half of the province (Canadensys). Introduced in CAN (BC, SK, MB, ON, QC, NL, NS, NB, PE, YT, NT); USA (AK, AZ, AR, CA, CO, CT, DE, FL, GA, ID, IL, IN, IA, KS, KY, LA, ME, MD,…
Alberta: Predominantly in the southern half of the province (Canadensys). Introduced in CAN (BC, SK, MB, ON, QC, NL, NS, NB, PE, YT, NT); USA (AK, AZ, AR, CA, CO, CT, DE, FL, GA, ID, IL, IN, IA, KS, KY, LA, ME, MD, MA, MI, MN, MS, MO, MT, NE, NV, NH, NJ, NM, NY, NC, ND, OH, OK, OR, PA, RI, SC, SD, TN, TX, UT, VT, VA, WA, WV, WI, WY) (USDA).
Citation
Page Citation for Thlaspi arvense L.
Page Citation
"Species Details - Thlaspi arvense L., University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/1-8017/12-120852. Accessed 17 Dec. 2024.
Specimen Information
There are 115 specimens of this Species.
114737 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Parkland county
Date Collected2005-06-24
116168 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedEurope: Poland, Jaskice
Date Collected2005-11-07
118893 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, RB Miller Biological Station
Date Collected1967-07-07
118894 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, RB Miller Biological Station
Date Collected1967-07-13
119307 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Rumsey Ecological Reserve
Date Collected1997-07-26
119128 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: United States, Montana, Missoula County, Pattee Canyon
Date Collected1962-05-09
120010 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Hinton
Date Collected1965-07-06
121317 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Nisku
Date Collected2009-06-03
121545 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Coyote Lake Nature Sanctuary
Date Collected2009-07-02
122259 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Crescent Falls Provincial Recreation Area
Date Collected2009-07-24
101390 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Northwest Territories, Fort Simpson
Date Collected1982-07-11
23060 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Northwest Territories, Fort Simpson
Date Collected1955-06-14
9960 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Northwest Territories, Hay River
Date Collected1950-06-20
9961 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Northwest Territories, Norman Wells
Date Collected1953-07-27
125464 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Edmonton
Date Collected1964-07-07
125465 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Bragg Creek Provincial Park
Date Collected1980-07-10
125466 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Rumsey Ecological Reserve
Date Collected1982-06-08
125467 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Twin River Heritage Rangeland Natural Area
Date Collected1988-07-08
126035 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Hoadley
Date Collected2010-06-08
127018 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Breton
Date Collected2010-06-05
127156 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Kinsella Ranch
Date Collected2010-06-05