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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 ?
The Oxalis Group was founded in 2009 by Rob Whorrod having had many years experience working within global oil and gas markets.
variation in chasmogamy and cleistogamy in Oxalis montana (Oxalidaceae).
With stronger influence from the West and growing income in the East, Zelik added a small range of fine origin coffees to the Oxalis catalogue in 1999.
Bryophyllum pinnatum (Crassulaceae), Oxalis corniculata (Oxalidaceae), Glycine max (Leguminosae), Pilea peperomioides (Urticaceae), Mentha haplocalyx (Lamiaceae).
The Oxalis Group, formed by Rob Whorrod after the sale of his previous business, Walsall Limited, develops and manufactures products and systems used to protect people, processes and the environment.
The 30 people who attended saw and sampled a variety of locally-grown weeds and plants, including oxalis (which looks like a shamrock and has an acidic taste), daylilies (often used in Chinese cuisine, but some species can be toxic) and horsemint (which has white/purplish flowers, a strong scent and flavor comparable to garden mint).
In general, two annual dicots, Oxalis dillenii and Parietaria obtusa, were the most abundant species, comprising 21 and 16% of all seedlings, respectively.
My shopping list includes allium triquetrum, anemone nemorosa, anemone blanda, cyclamen coum and cyclamen neapolitanum, erythronium dens-canis, hyacinthoides non-scripta, oxalis adenophylla and eranthus hyemalis.
We are giving every reader a pack of 150 bulbs - worth more than pounds 21 - containing 40 oxalis, 65 allium moly, 10 freesias, 10 gladioli and 25 Dutch iris - guaranteed to add bursts of vibrant colour to your yard.
If you were to spray your lawn with the sorts of chemicals used on dicotyledonous, broadleaf weeds such as dandelions or oxalis, nothing would happen.
Top garden opinion formers and writers at the annual `Best of the best' flower bulb ceremony held by The Netherlands Flower Bulb Information Centre voted the Dahlia Arabian Night the must-have summer flower bulb to plant this year, ahead of cannas, oxalis and zantedeschia.
Two weeks later I found a delightful little summer bedder called Oxalis triangularis subspecies papilionacea.