connection with the presence or absence of oxalate kidney stones. For one thing, the fatal effects on sheep are far too rapid to result from the growth of bulk kidney stones. The plant has been found to be nutritious, but too acidic to be good fodder, largely being left untouched by grazing stock. When stock do consume large quantities, the effects typically involve death in several weeks with symptoms suggesting chronic oxalate poisoning, including tetany, or sudden death with extensive renal damage. Such damage suggests the twofold effect of calcium immobilisation (the tetany) and the formation of Calcium Oxalate Monohydrate raphides in the kidney tissue. The histotoxic effects of the raphides in kidney have by now been investigated. Oxalis poisoning of stock is not a serious forage concern in South African pastures, unless exceptionally favoured by overgrazing. Gallery References External links Jepson Manual Treatment: Oxalis pes-caprae USDA Plants Profile Oxalis pes-caprae - Photo gallery Photo gallery of Oxalis pes-caprae, Flickr Oxalis pes-caprae Israel Wildflowers pes-caprae Flora of South Africa Flora of Lebanon Plants described in 1753 Taxa named by Carl Linnaeus