Potentilla, a considerable genus of herbs and shrubs, including about a dozen British species and belonging to the order Rosacea?. Their leaves may be ternate, quinate, or pinnate, and are sometimes silvery on one or both surfaces. The five-leaved calyx has an epicalyx (q.v.) immediately below it. and the petals are generally five and yellow, but may be four and white, orange or crimson. The quinate forms are called "cinque-foils." They are closely related to the strawberries - some species producing "runners" - but the fruit is a dry etasrio (q.v.) of achenes.