Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium Read more about this collection »

LeavesEgg to lance-shaped; divided into leaflets; variously toothed; stem leaves ear-like at base (Moss, 1983). Alternate; 6-15 cm long; large lobe at tip; stalkless upper leaves (Johnson et al., 1995). Soft to stiff hairs (E-Flora BC). FlowersPetals 2 mm long; yellow; stalks 4-8 mm long (Moss, 1983). Clusters at stem tips; four petals (Johnson et al., 1995). Fruits and SeedsPods egg-shaped; hairy; 3-7 mm long; curved (Moss, 1983). Stalks 4-8 mm long; seeds in 2 rows (Johnson et al., 1995). Honeycombed texture (E-Flora BC).

Scientific Name Rorippa islandica (Oeder ex Murray) Borbás Common Name yellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). General Description An annual or biennial plant with branching erect stems 20-60 cm tall that bear yellow flowers (Johnson et al., 1995); soft to stiff hairs (E-Flora BC). Leaves

Egg to lance-shaped; divided into leaflets; variously toothed; stem leaves ear-like at base (Moss, 1983). Alternate; 6-15 cm long; large lobe at tip; stalkless upper leaves (Johnson et al., 1995). Soft to stiff hairs…

Flowers Petals 2 mm long; yellow; stalks 4-8 mm long (Moss, 1983). Clusters at stem tips; four petals (Johnson et al., 1995). Fruits and Seeds Pods egg-shaped; hairy; 3-7 mm long; curved (Moss, 1983). Stalks 4-8 mm long; seeds in 2 rows (Johnson et al., 1995). Honeycombed texture (E-Flora BC). Phenology June to August (JSTOR). Notes

2n=32* (Moss, 1983). Also known as Rorippa palustris (Moss, 1983). This species has been eaten in similar fashion to European watercress (R. nasturtium-aquaticum or N. officinale) (Johnson et al., 1995). It has been added to soups, meat dishes, salads, as a potherb, in herb butter; has been used to make teas or seasoning (Johnson et al., 1995). Romans used with vinegar to treat mental illnesses (Johnson et al., 1995).

Range/Distribution Alberta: A few occurrences in southern half of province and one in the NW corner (Canadensys). CAN (BC, SK, MB, ON, QC, NS) (Canadensys); USA (AL) (USDA).

Page Citation

"Species Details - Rorippa islandica (Oeder ex Murray) Borbás, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/1-8004/12-120785. Accessed 07 Jul. 2025.

11 results plotted on map in 11 markers.
Note: Only records with latitude and longitude coordinates are plotted on map.

118107 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: Canada, Quebec, Ile Perrot, La Grande Anse Date Collected1964-09-28

118108 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: Canada, Quebec, Coteau-du-Lac National Historic Site of Canada Date Collected1970-09-08

118109 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: Canada, Quebec, Ruisseau Saint-Jean Date Collected1975-06-18

26787 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: Canada, Ontario, Lake Huron, Great Duck Island Date Collected1959-06-25

125514 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: Canada, Alberta, Miquelon Lake Provincial Park Date Collected2008-06-16

91234 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: Canada, Alberta, Banff National Park, Banff Date Collected1899-08-29

91230 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: Canada, Alberta, Big Hill Springs Provincial Park Date Collected1952-08-09

91217 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: Canada, Alberta, Shepard Date Collected1953-09-09

91231 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: Canada, Alberta, Clover Bar Date Collected1952-07-14

9879 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: Canada, Alberta, Edmonton Date Collected1947-07-17

9866 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: Canada, Alberta, Granum Date Collected1951-08-22

77696 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: Canada, Alberta, Habay Date Collected1974-07-03

101090 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: Canada, Saskatchewan, Prince Albert Date Collected1979-08

100718 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: United States, Alaska, Chugach State Park, Eklutna Glacier Date Collected1983-07-31

105376 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: Canada, Manitoba, Riding Mountain National Park Date Collected1979-08-02

104933 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: Canada, Quebec, Québec City Date Collected1976-06-20/1976-06-24

107682 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: United States, Minnesota, Clearwater County, Lake Itasca Date Collected1981-07-24

100704 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: United States, New Hampshire, Strafford County, Turtle Pond Date Collected1965-10-11

134388 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: Canada, Alberta, Elk Point Date Collected2009-07-30

138781 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: Canada, Alberta, Jasper National Park, Maligne Lake Date Collected1971-10-07

141980 - Rorippa islandica (Oeder ex Murray) Borbás

University of Alberta Vascular Plant Herbarium

Common Nameyellow cress (Moss, 1983); marsh yellow cress (Johnson et al., 1995). Place CollectedNorth America: Canada, Alberta, Cameron Hills Date Collected1982-08-10

Species Details