Vincent rarely included sunflowers in the bouquets he painted in Paris, but late in the summer of 1887, he used the cut heads of several blooms as subjects for still lifes. The desire to study color seems to have inspired these works. In Sunflowers, Vincent varied the yellows from pale citron to deep ocher, with the stems, centers, and brighter grasslike strokes in the background making a vibrant contrast. He painted the ragged petals and the twisted stems with a vigorous impasto, suggesting the robust quality of the flower. http://www.paintingmania.com/four-cut-sunflowers-6_2871.html   Painting, Oil on Canvas Paris, France: August – September, 1887 Kröller-Müller Museum Otterlo, The Netherlands, Europe F: 452, JH: 1330