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Related to charlock: wild radish


mustard, common name for the Cruciferae, or Brassicaceae, a large family chiefly of herbs of north temperate regions. The easily distinguished flowers of the Cruciferae have four petals arranged diagonally (“cruciform”) and alternating with the four sepals. Most of the nearly 50 genera indigenous to the United States are found in the West. The family includes numerous weeds and wildflowers, e.g., peppergrass, toothwort, and shepherd's-purse. The Cruciferae, often rich in sulfur compounds and in vitamin C, include important food and condiment plants, many cultivated from ancient times. Especially important are the herbs of the genus Brassica, e.g., rape, rutabaga, turnip, mustard, and numerous varieties of the cabbage species. Cress, watercress, horse-radish, and radish are also of this family. A few species are cultivated as ornamentals, e.g., candytuft, rose of Jericho, wallflower, and types of stock, rocket, and alyssum. Woad was formerly an important dye source. The herbs of the family that are called mustard are species of Brassica and Sinapis (formerly included in Brassica) native to Europe and W Asia. Most important commercially are the black mustard (B. nigra) and white mustard (S. alba). These are yellow-flowered annuals naturalized in the United States; the black mustard is often a weed infesting grainfields, as is also the charlock, or wild mustard (S. arvensis). The black and the white mustard resemble each other and are used more or less similarly. They are cultivated for the seeds, which are ground and used as a condiment, usually mixed to a paste with vinegar or oil, sometimes with spices or with an admixture of starch to reduce the pungency. (The pungency of mustard does not develop until it is moistened.) Black mustard seeds are more pungent than the white and yield a yellowish, biting oil (mustard oil) that has also been useful in medicine. The white mustard is used in some places as forage for sheep and as green manure. Mustards are also grown as salad plants and for greens, as are the Indian, or leaf, mustard (B. juncea) and the Chinese mustard, or bok choy (B. rapa chinensis). Garlic mustard (Alliaria petiolata), an Old World herb whose leaves and seeds are used to season food, is an invasive species in many parts of North America. Mustard is classified in the divison Magnoliophyta, class Magnoliopsida, order Capparales (or Brassicales), family Cruciferae (or Brassicaceae).

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1. a weedy Eurasian plant, Sinapis arvensis (or Brassica kaber), with hairy stems and foliage and yellow flowers: family: Brassicaceae (crucifers)
2. white charlock a related plant, Raphanus raphanistrum, with yellow, mauve, or white flowers and podlike fruits
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
Charlock seeds can remain dormant for up to 30 years before germinating.
Anthony McDougall, 19, of Charlock, Coulby Newham, given a 12-month community order with 40 hours' unpaid work and supervision requirements and ordered to pay PS145 costs for theft.
At Eccleston Mere, coltsfoot, red dead nettle and yellow charlock are flowering away, and Jim found good patches of flowering lesser celandine in Rufford.
Charlock is also known as wild mustard, and food historians and geneticists say most of the green vegetables farmed in the western world - apart from lettuce - were developed from it.
At one test site, the researchers found a GM version of common weed charlock growing in the field the year after GM trials.
Brassica kaber (DC.) Wheeler: (*,+); Synonym--Sinapis arvensis L., Charlock; rare; roadsides; BSUH 10536.
Linnets plunged by 40 per cent during the last 30 years due to loss of their traditional foods, including the arable plant charlock, through herbicide use.
Manders, of Charlock, Coulby Newham, was jailed for 18 months after he pleaded guilty to three thefts and three attempted burglaries, and breach of the suspended jail sentence.
Mike Barrow saw flowering yellow charlock in Huyton.