Rorippa
Encyclopedia
Rorippa is a flowering plant
genus in the cabbage
family (Brassicaceae
), containing approximately 80 species native to Europe
through central Asia
, Africa
, and North America
. Rorippa species are annual
to perennial herb
s, usually with yellow flower
s and a peppery flavour.
Rorippa formerly included several species of watercress
, now placed in the genus Nasturtium. In particular, R. nasturtium-aquaticum (now N. officinale) and R. microphylla (now N. microphyllum) are often referred to as species of Rorippa.
Species include:
Flowering plant
The flowering plants , also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants. Angiosperms are seed-producing plants like the gymnosperms and can be distinguished from the gymnosperms by a series of synapomorphies...
genus in the cabbage
Cabbage
Cabbage is a popular cultivar of the species Brassica oleracea Linne of the Family Brassicaceae and is a leafy green vegetable...
family (Brassicaceae
Brassicaceae
Brassicaceae, a medium sized and economically important family of flowering plants , are informally known as the mustards, mustard flowers, the crucifers or the cabbage family....
), containing approximately 80 species native to Europe
Europe
Europe is, by convention, one of the world's seven continents. Comprising the westernmost peninsula of Eurasia, Europe is generally 'divided' from Asia to its east by the watershed divides of the Ural and Caucasus Mountains, the Ural River, the Caspian and Black Seas, and the waterways connecting...
through central Asia
Asia
Asia is the world's largest and most populous continent, located primarily in the eastern and northern hemispheres. It covers 8.7% of the Earth's total surface area and with approximately 3.879 billion people, it hosts 60% of the world's current human population...
, Africa
Africa
Africa is the world's second largest and second most populous continent, after Asia. At about 30.2 million km² including adjacent islands, it covers 6% of the Earth's total surface area and 20.4% of the total land area...
, and North America
North America
North America is a continent wholly within the Northern Hemisphere and almost wholly within the Western Hemisphere. It is also considered a northern subcontinent of the Americas...
. Rorippa species are annual
Annual plant
An annual plant is a plant that usually germinates, flowers, and dies in a year or season. True annuals will only live longer than a year if they are prevented from setting seed...
to perennial herb
Herb
Except in botanical usage, an herb is "any plant with leaves, seeds, or flowers used for flavoring, food, medicine, or perfume" or "a part of such a plant as used in cooking"...
s, usually with yellow flower
Flower
A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants . The biological function of a flower is to effect reproduction, usually by providing a mechanism for the union of sperm with eggs...
s and a peppery flavour.
Rorippa formerly included several species of watercress
Watercress
Watercresses are fast-growing, aquatic or semi-aquatic, perennial plants native from Europe to central Asia, and one of the oldest known leaf vegetables consumed by human beings...
, now placed in the genus Nasturtium. In particular, R. nasturtium-aquaticum (now N. officinale) and R. microphylla (now N. microphyllum) are often referred to as species of Rorippa.
Species include:
- Rorippa alpina (S. Wats.) Rydb.
- Rorippa amphibiaRorippa amphibiaRorippa amphibia is a plant species in the genus Rorippa....
(L.) Bess. - Rorippa austriacaRorippa austriacaRorippa austriaca is a species of flowering plant in the mustard family known by the common names Austrian fieldcress and Austrian yellowcress. It is native to parts of Europe and Asia, and it is known in North America as an introduced species and sometimes a noxious weed. It can grow in disturbed...
(Crantz) Bess. - Rorippa barbareifolia (DC.) Kitagawa
- Rorippa calycina (Engel.) Rydb.
- Rorippa columbiaeRorippa columbiaeRorippa columbiae is a species of flowering plant in the mustard family known by the common name Columbia yellowcress. It is native to the western United States from central Washington to northern California, where it grows in moist to wet, sandy habitat types, such as playa...
(Suksd. ex B.L. Rob.) Suksd. ex Howell - Rorippa curvipesRorippa curvipesRorippa curvipes is a species of flowering plant in the mustard family known by the common name bluntleaf yellowcress. It is native to much of western North America from Alaska to Mexico to the Mississippi River, where it can be found in various types of moist and wet habitat, including lakeshores...
Greene - Rorippa curvisiliquaRorippa curvisiliquaRorippa curvisiliqua is a species of flowering plant in the mustard family known by the common name curvepod yellowcress. It is native to western North America from Alaska to California to Wyoming, where it can be found in various types of moist and wet habitat, including lakeshores and riverbanks,...
(Hook.) Besser ex Britton - Rorippa indica Hiern.
- Rorippa palustrisRorippa palustrisRorippa palustris is a species of flowering plant in the mustard family known by the common names bog yellowcress and marsh cress. It is native to many parts of Europe, Asia, North Africa, and North America, and it can be found in many other parts of the world as an introduced species and a common...
(L.) Bess. - Rorippa sarmentosa (G. Forst. ex DC) J. F. Macbr.
- Rorippa sinuataRorippa sinuataRorippa sinuata is a species of flowering plant in the mustard family known by the common name spreading yellowcress. It is native to North America, including most all of the western and central United States, where it grows in many types of moist and wet habitat, such as lakeshores and riverbanks,...
(Nutt.) Hitchc. - Rorippa sphaerocarpaRorippa sphaerocarpaRorippa sphaerocarpa is a species of flowering plant in the mustard family known by the common name roundfruit yellowcress. It is native to North America, including the western United States and northern Mexico, where it grows in moist habitat, such as riverbanks and mudflats. It is an annual herb...
(A. Gray) Britton - Rorippa subumbellataRorippa subumbellataRorippa subumbellata is a rare species of flowering plant in the mustard family known by the common name Lake Tahoe yellowcress. It is known only from the shores of Lake Tahoe, straddling the border between California and Nevada. There are an estimated fourteen populations of the plant still in...
Rollins - Rorippa sylvestrisRorippa sylvestrisRorippa sylvestris is an invasive species ) in the United States....
(L.) Bess.