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Related to oxalis: Oxalis corniculata


(ŏk`səlĭs) or

wood sorrel,

any species of the plant genus Oxalis. Most of the cultivated kinds are tropical herbs used as window plants. The leaves are usually cloverlike and respond to darkness with "sleep" movements by folding back their leaflets. Several species grow wild in North America, including the white wood sorrel (O. acetosella), widely distributed in the north temperate zone and one of the plants identified as the shamrockshamrock,
a plant with leaves composed of three leaflets. According to legend it was used by St. Patrick in explaining the doctrine of the Trinity; it is now used as the emblem of Ireland. An artificial or real shamrock leaf is customarily worn on St. Patrick's Day.
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. This and, to a lesser extent, other species have long been used for salads and greens because of their pleasantly acid taste; these species contain oxalic acidoxalic acid
or ethanedioic acid
, HO2CCO2H, a colorless, crystalline organic carboxylic acid that melts at 189°C; with sublimation. Oxalic acid and oxalate salts are poisonous. Oxalic acid is found in many plants, e.g.
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. O. tuberosa has a starchy tuber that has been valued in the high Andes for centuries. Although species of Oxalis are called sorrels, the genus is unrelated to the true sorrel, or dock (genus Rumex), of the buckwheat family. Oxalis is classified in the division MagnoliophytaMagnoliophyta
, division of the plant kingdom consisting of those organisms commonly called the flowering plants, or angiosperms. The angiosperms have leaves, stems, and roots, and vascular, or conducting, tissue (xylem and phloem).
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, class Magnoliopsida, order Geramales, family Oxalidaceae.
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Lemony fun citrus-like tangy flavor, can be used as seasoning for fish etc. Superficially resembles clover (3 heart-shaped leaves joined at tip) 5 petal flowers can be white, pink, red or yellow. The edible root tubers look like small red and white fingerling potatoes. Tastes great and lots of people eat it, but don't eat large amounts at once because of high levels of oxalic acid which binds calcium and is hard on the kidneys. It forms calcium oxalate which is insoluble.



a genus of plants of the family Oxalidaceae. They are perennial and, less frequently, annual herbs; some are subshrubs. The leaves are alternate and usually ternately or palmately compound. The flowers are pentamerous; the fruit is a capsule. There are approximately 800 species, distributed primarily in Southern Africa, South America, and Mexico. Six species are found in the USSR. The European wood sorrel, or sheep sorrel (Oxalis acetosella), which is often found in shady coniferous forests, is a small stemless plant with a creeping rhizome. The trifoliate bracts fold up at night and in overcast weather. The flowers, which are solitary, are white with pinkish violet veins. The leaves of the European wood sorrel, like those of the procumbent yellow sorrel (O. corniculata), contain vitamin C and oxalic acid; they are toxic to sheep when consumed in large quantities. Some African and American species are cultivated in a number of countries for their edible tubers. Many species are cultivated as ornamentals.

References in periodicals archive ?
Oxalis is a plant genus that includes some truly ornamental types among its species.
Adding Oxalis market-leading technology to the Eaton portfolio enables us to efficiently enhance and expand our onshore compliant systems.
The oxalis weed (Oxalis corniculata) has a trifoliate leaf, which creates the mistaken impression that it is in the clover family.
We'll send you a 150-bulb pack FREE, comprising: 40 Oxalis, 65 Allium Moly, 10 Freesias, 10 Gladioli and 25 Dutch Iris, so you can enjoy some extra colour in your garden this year.
PRETTY ground-hugging clover, purple-coloured leaves and pale pink flowers make Oxalis triangularis a great asset in a summer garden.
Plant anemones, crocus, daffodils, Dutch iris, freesias, homeria, hyacinths, ixia, leucojum, lycoris, oxalis, ranunculus, scilla, sparaxis, tritonia, tulips, and watsonia (zones 1-2: some bulbs aren't hardy; choose from what's available in nurseries).
Still, better to be invaded by red valerian than some weeds you might know - such as oxalis, field bindweed or yellow nut sedge.
For a stunning blanket of rich colours, textures and shapes choose from a wide range of bulbs from Allium to Acidanthera, Begonia, Gladioli, Liatris, Oxalis Deppei, Sparaxis, Iris, Lilium, Anemone or Triteleia.
Rockeries are their most popular home, so go for Alpine pansies, rock jasmine, oxalis, aubretia and tiny geraniums to plug the gaps.
Among the purple-leafed (also crimson, copper and bronze) species to be found at the Getty are: Crinum asiaticum cuprafolium, a spider lily with 4-inch wide, 4-foot long leaves and fragrant flowers; Loropetalum chinense rubrum, the pink-flowered razzleberry, which is a low-growing shrub; an oxalis, also blooming in pink; Euphorbia atropurpurea; Hebe ``Reevesii''; Heiiotropium arborescens ``Black Beauty''; Heuchera ``Palace Purple.
An ISO 9001 accredited manufacturer of Electrical and Telecoms (ET) Systems for hazardous areas, The Oxalis Group,declared that it has achieved the ISO 14001:2004 certification for Environmental Management Systems (EMS) accepted by ISO Quality Services Ltd.