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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/1-8017/12-120866. Accessed 14 Jan. 2025.
Specimen Information
There are 115 specimens of this Species.
109917 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Manitoba, Lake Audy
Date Collected1979-06-08
117441 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Saskatchewan, Saskatoon
Date Collected1968-09-07
106794 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: United States, Wyoming, Park County, Absaroka Mountains
Date Collected1983-06-30
19895 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: United States, South Dakota, Codington County, Watertown
Date Collected1958-05-10
95125 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: United States, Utah, Uintah County, Grouse Creek
Date Collected1990-06-07
19896 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: United States, South Dakota, Codington County, Punished Womans Lake
Date Collected1958-06-21
25676 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedEurope: Finland, Etela-Suomen Laani, Riihimaki
Date Collected1929-06-29
74437 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedEurope: Finland, Oulun laani, Kempele
Date Collected1961-06-15
9955 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Edmonton
Date Collected1915-05-07
9956 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Edmonton
Date Collected1936-06-13
91136 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Bruderheim
Date Collected1986-07-01
42977 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Whitford Lake
Date Collected1973-05-13
77695 - 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
58300 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Fort Saskatchewan
Date Collected1948-05-30
26284 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Miquelon Lake Provincial Park
Date Collected1968-06-03
24358 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Crowsnest Forest Reserve
Date Collected1944-07-27
85428 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Wagner Natural Area
Date Collected1974-06-06
58064 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Calgary
Date Collected1954-07-06
28732 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Cline River
Date Collected1968-07-03
58294 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Fort Saskatchewan
Date Collected1948-06-18
28328 - Thlaspi arvense L.
University of Alberta Vascular Plant Herbarium
Common Namepennycress, stinkweed (Moss, 1983).
Place CollectedNorth America: Canada, Alberta, Cadomin
Date Collected1968-06-15