yellow wood sorrel - oxalis pes-caprae or yellow shamrock and pine tree trunk

background beautiful beauty botanical botany bright buttercup clear close closeup color colorful effect environment essence europe european feeding flora floral florida flower flowers focus foliage fresh garden gardening green honey known leaf leaves lisbon oxalidaceae oxalis pescaprae plant pollen portugal selective shallow shamrock sintra sob sorrel sour spring springtime wild wildflower winter wood yellow