American painter and graphic artist who uses innovative materials such as tar, plaster and latex paint in the creation of isolated, recognizable images, e.g. his 'puzzle pictures' series of the mid '70s. His land and seascapes of the later '70s are multilayerd, suggesting both physical and illusory dimensions. In the mid-80s he began to create his well known images of lemons in yellow and black, e.g. 'Four lemons' (1984) and the 'Black Lemon' series on paper (1985-6). Throughout the '80s he produced 'event pictures' which were inspired by current issues, e.g. environmental and industrial concerns, e.g. 'Pumps' (1984) and 'Early Morning' (1988), in which the effect of fire is achieves by the application of turpentine to yellow latex paint.