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'''Oxalis tetraphylla''' (often still traded under its [[Synonym (taxonomy)|syn.]] '''''O. deppei''''') is a [[bulb]]ous plant from Mexico. A common name is '''"[[Iron Cross]]"''', after a famous [[cultivar]]; it is also known as '''"[[lucky clover]]"''', and in a wild or [[feral]] state as '''Four-leaf [[Sorrel]]''' or, least ambiguously, '''Four-leaved [[Pink-sorrel]]'''. It has leaves divided into four and has been called '''"lucky leaf"''' and even '''"four-leaf clover"''', but it is not a true [[clover]]. Related to the [[Common Wood-sorrel]] (''O. acetosella''), it is commonly used as an [[ornamental plant]]. It is also edible, the flowers and leaves having a sharp [[lemon]] flavor. However, since the [[oxalic acid]] in the plant can interfere with the absorption of certain nutrients in the body, especially [[calcium]], too much can be harmful. If planted in early spring it will grow and flower throughout spring and summer. Some bulbs can survive a cold winter but in areas with frost they should be kept in a cool dry place over winter and replanted in the spring. The bulbs will multiply by autumn. {{Inc| Oxalis tetraphylla, Cav. (lonoxalis tetraphylla, Rose). Lfts. mostly 4, 1 in. long, inversely deltoid, retuse, each crossed by a purple band: fls. rather few in simple umbels, lilac or rosy. Mex. }} ==Cultivation== ===Propagation=== ===Pests and diseases=== ==Varieties== ==Gallery== <gallery perrow=5> Image:Gluecksklee.jpg|Oxalis tetraphylla leaf File:2007-07-01Oxalis tetraphylla04.jpg File:Oxalis tetraphylla - Zwiebelballen.jpg File:2007-07-01Oxalis tetraphylla02.jpg File:Oxalis tetraphylla 1.jpg </gallery> ==References== <references/> *[[Standard Cyclopedia of Horticulture]], by L. H. Bailey, MacMillan Co., 1963 <!--- xxxxx *Flora: The Gardener's Bible, by Sean Hogan. Global Book Publishing, 2003. ISBN 0881925381 --> <!--- xxxxx *American Horticultural Society: A-Z Encyclopedia of Garden Plants, by Christopher Brickell, Judith D. Zuk. 1996. ISBN 0789419432 --> <!--- xxxxx *Sunset National Garden Book. Sunset Books, Inc., 1997. ISBN 0376038608 --> ==External links== *{{wplink}} {{stub}} __NOTOC__
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