Quadrants With Flower Petals - Abstract Impressionist San Francisco School Abstract impressionist oil painting by California artist Kristin Cohen (American, b. 1963). This piece is divided into four unequal quadrants, each with a bold color theme. Flower petals are added to the painted surface in the lower left quadrant. From a collection of her works. Unsigned. Unframed. Image, 22.5"H x 23.50"W. A California abstract expressionist artist, Kristin studied at Humbolt State University and with Micheal Dee Cookinham a bay area figurative and abstract expressionist painter.