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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/1-8017/12-158811. Accessed 12 Jan. 2025.
Specimen Information
There are 115 specimens of this Species.
128852 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, British Columbia, Sparwood
108686 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Bellevue
Date Collected1982-08-03
108684 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Head-Smashed-in Buffalo Jump
Date Collected1982-06-08
108685 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Head-Smashed-in Buffalo Jump
Date Collected1982-06-14
39362 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Beaverlodge Research Station
Date Collected1971-05-17
26470 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Sunnybrook
Date Collected1968-05-29
57505 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Edmonton
Date Collected1969-07
40537 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Jasper National Park, Willow Creek
Date Collected1971-07-26
58065 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Calgary
Date Collected1942-06-09
23245 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Buck Lake
Date Collected1967-09-28
42021 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Rich Lake
Date Collected1971-06-06
28262 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Fort McMurray
Date Collected1969-06-10
55835 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Fort Chipewyan
Date Collected1971-07-08
42164 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Pinehurst Lake
Date Collected1968-07-22
54583 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Hays
Date Collected1971-06-01
55828 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Fort Chipewyan
Date Collected1971-07-24
85420 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Wagner Natural Area
Date Collected1974-06-11
57533 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Porcupine Hills
Date Collected1971-07-28
76172 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Red Deer River
Date Collected1974-07-25
21961 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Lac Sainte Anne
Date Collected1967-06-08
70492 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Calgary
Date Collected1959-07-13