Latin name: Oxalis acetosalla
The Wood-sorrel is a fascinating plant which is very sensitive to different light and weather conditions. At night and during inclement weather, the leaves fold back whilst the flowers droop to help protect the pollen. With clover-like leaves and a single-stem flower, this springtime herb is predominantly found in woodlands, hedgerows and other shady and often moist locations. The leaves taste of lemon due to the oxalic acid they contain. These can be poisonous if eaten in large quantities.
Wood-sorrel flowers around Easter and is a common sight within the woodland habitats of the Yorkshire Dales National Park. Good places to spot it include Freeholders' Wood Local Nature Reserve in Wensleydale, Oxenber and Wharfe Woods near Crummuckdale, Grass Wood in Wharfedale and on the Ingleton Waterfalls Walk.