Wood-sorrels
Wood-sorrel Family - Oxalidaceae
Procumbent Yellow-sorrel Oxalis corniculataNative from Mexico to Peru and the Caribbean Islands, but widely naturalised throughout much of the world. A creeping plant that can cover extensive areas of ground. Leaves may be green but more often the entire plant (except the flowers) is flushed deep reddish-purple. Green-leaved plants can be difficult to tell from Least Yellow-sorrel but flowers have all 10 stamens with anthers (look closely as five are more prominent from a distance) and the flowers are typically in clusters of two to eight (though the flowers not all opening at once).
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Cape Sorrel Oxalis pes-caprae
(Bermuda Buttercup) Native to Southern Africa but widely introduced elsewhere and often a highly invasive alien in urban environments and cultivated ground.
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