The Nebraska Quilt Museum might help. I have a quilt my Grandmother pieced in 1935 and the green in yours matches it exactly. In addition, the patterns have this in common: 3 stems/flowers coming from a triangular pot. Mine has gold and purple and the flowers are hexagons, all one color. The layout is different but the squares are on the diagonal/bias, mine with no pattern are a square of muslin rather than your pink.