close-up heart-d leaflets of lemon clover or yellow woodsorrel oxalis spp. a herbaceous ground cover weed plant resemble a

background celebration closeup clover cover dark day decoration decorative design floral foliage forest garden grass green ground heartshaped herb holiday ireland irish jungle leaf leaflet leaves lemon luck lucky march natural nature ornamental oxalis patricks pickle plant shamrock sorrel sourgrass spring stalk symbol threeleaves trifoliate weed wild wood woodsorrel