California-born Pat Adams, who is 95, found her signature artistic language in New York City. In the 1950s, surrounded by Abstract Expressionism, she clung to the natural world. Squares, circles, triangles, and “S” curves were her tools for investigating, in her words, “the beginnings of things.” These forms have remained at the heart of her practice. Alexandre Gallery now presents paintings from Adams’s defining midcentury decades. —Clara Molot