abundance African wood-sorrel Bermuda-buttercup Bermuda-sorrel buttercup-oxalis Cape-cowslip Cape-sorrel cotyledon English-weed goat's-foot groud-cover invasive noxious-weed oxalis oxalis-pes-caprae reflections sorrel sourgrass soursob soursop trifoliate-leaves tristylous-flowering-plant weed weeds wood-sorrel yellow-sorrel flora flowering flowers yellow abstract African-wood-sorrel background grass green greenery ground-cover water botany buckwheat chloroplast dock docks herb laminar leaf leaves nature organ plant red rumex small sorrels structure african balance bermuda botanical buttercup cape english flower garden peaceful purple spring springtime summer damselfly dragonfly insect blossom blossoms grassland meadow wild leave sow thistle farm grazing horse mane mare natural environment pasture