abstract abundance African-wood-sorrel background Bermuda-buttercup Bermuda-sorrel buttercup-oxalis Cape-cowslip Cape-sorrel cotyledon English-weed goat's-foot grass green greenery ground-cover invasive noxious-weed oxalis oxalis-pes-caprae reflections sorrel sourgrass soursob soursop trifoliate-leaves tristylous-flowering-plant water weed weeds wood-sorrel yellow-sorrel cloud crowfoot flowers Italy landscape natural nature plant pond pool Ranunculaceae ranunculus reflection sky spring white autumn bush close elements forest horizon lake mirror orange peace photo photography red serene stack tree trees yellow bank countryside England reflect rural stream Sussex weir bird duck feathers formation splash whisteling white faced calm leaf leaves park tranquil